Forum Backlinks: We Checked 169 Links on 23 Forums. 52 Were Followed
We read the rel attribute on 169 user-posted links across 23 forums and tallied 12 ranking guides. Forum links are not all nofollow, but the followed ones cluster on technical forums, and Google names signature links as spam.
Forum backlinks are not all nofollow: in our check, 52 of 169 user links on 23 forums were followed, but they sat mostly on technical community forums, and Google names optimized links in forum posts and signatures as link spam. So forum link building can earn a real link. It does so by being a useful member, not by dropping links, and the forum's software and settings decide what your link is worth before you post.
In a hurry? The five steps: pick three forums your buyers use, inspect a few user links to see their rel, answer questions without links until you're a regular, link only when your page is the best answer, and track visits rather than link equity. Each step is explained below the first chart.
On October 31, 2026 we looked at:
- 23 forums and communities we could read, from Discourse, XenForo, phpBB, vBulletin, MyBB and bbPress boards to Hacker News, Dev.to, GitHub Discussions and Indie Hackers. On one thread from each, we read the rel attribute on every link users posted. Reddit, Quora and Stack Overflow blocked our requests.
- 12 ranking guides on forum backlinks, tallied for what they claim and what they leave out.
- What Google, Discourse and Stack Exchange say, quoted word for word.
What we found on 23 forums#
From each forum we took the thread with the most links in its listing and read the raw HTML, the version a crawler gets without logging in.
52 of the 169 links were followed, about 31%. That is more than most guides suggest. Eight of the 10 guides that mention nofollow describe forum links as mostly nofollow or ugc.
Where the followed links were: technical communities. Obsidian, Python Discuss, Arduino, Meta Discourse and SitePoint run on Discourse and left user links followed. Kodi (MyBB), Linux Mint (phpBB) and Dev.to did the same. The links in those threads pointed to GitHub repositories, documentation, 3D models and bug reports. Posters were sharing sources, not promoting sites.
Where every link was nofollow or ugc: every marketing, business and domain forum we read, plus several technical ones. Warrior Forum, DigitalPoint, NamePros, Indie Hackers and City-Data marked every user link. So did FreeBSD, Overclockers UK and n8n, the only Discourse forum in our sample that kept the default, with all 26 links set to rel="noopener nofollow ugc". GitHub Discussions used nofollow, and Lobsters and WordPress.org used ugc on its own.
The mixed cases tell you how it works. On Hacker News, the submitted story link was followed and all 9 comment links were nofollow. On Lowyat, 7 of 17 links in one thread were followed and 10 were nofollow ugc, so the same page treated different posters differently.
Two more checks came back clean. None of the thread pages was noindexed, and none was blocked for Googlebot in robots.txt. Only one forum, WebmasterWorld, sent its user link through its own redirect.
How to do forum link building in 2026, in five steps#
Nothing is held back for later. If you read only this section, you can run the whole tactic today.
1. Pick three forums where your buyers already ask questions. Search your topic plus "forum" or "community", and check the vendor communities of tools your buyers use. A forum where your customers hang out beats a high-authority forum where they don't.
2. Check the rel before you invest time. Open a few threads, right-click links that other members posted, and choose Inspect. Look for nofollow or ugc in the rel attribute. If every link is marked, the forum is for visits and reputation, not link equity. Our dofollow vs nofollow guide explains the difference.
3. Become a regular before you link. Answer questions fully, with no links, for a few weeks. This is not just manners. On Discourse forums, new members can post only a few links, and by default, links from trusted long-time members lose nofollow.
4. Link only when your page is the best answer. Answer the question in the post itself, then link your guide, tool or data as the source for readers who want more. Never put keyword links in a signature. That is the exact pattern Google's spam policy uses as its example.
5. Track visits and mentions, not link equity. Tag your links with UTM parameters where the forum allows them, and watch referral traffic and sign-ups. A thread that ranks in Google or gets quoted by AI assistants can send visitors for years, whatever its rel says. Our post on backlinks for AI search covers why forum mentions matter there.
The forum software decides the rel, not you#
You cannot choose whether your link is followed. The forum software and the owner's settings choose for you.
Discourse adds nofollow ugc to user links out of the box. Its source code sets add_rel_nofollow_to_user_content: true by default and newuser_max_links to 2. Discourse's own guide to trust levels says new users cannot "Post more than 2 hyperlinks in a post," and that trust level 3 members "Have all their links followed (we remove automatic nofollow)." Five of our six Discourse forums showed followed links. We could not see whether those posters had reached trust level 3 or whether the owners had turned nofollow off.
XenForo marked every user link nofollow (usually nofollow ugc) on 4 of the 5 boards we read, and the fifth had only one followed link out of three.
Stack Exchange limits new users too. Its new-user help page says new users cannot "post more than eight hyperlinks at a time, either in a post or their user profile" or "post hyperlinks in comments," until they reach 10 reputation.
The pattern is the same everywhere. Forums trust members who have contributed, and they treat drive-by links as spam.
What Google says about forum links#
Google's spam policies (last updated August 28, 2026) list "Forum comments with optimized links in the post or signature" as an example of link spam, with a sample signature: "Thanks, that's great info!- Paul paul's pizza san diego pizza best pizza san diego". The same page lists "Spammy posts on forum threads" under user-generated spam.
Google also tells forum owners what to do. Its guide to qualifying outbound links says: "We recommend marking user-generated content (UGC) links, such as comments and forum posts, with the ugc value." It adds that owners "might remove this attribute from links posted by members or users who have consistently made high-quality contributions over time." That is the trust-level system Discourse built in.
Nofollow and ugc are not a total block. In its 2019 announcement, Google said: "All the link attributes—sponsored, ugc, and nofollow—are treated as hints about which links to consider or exclude within Search." It also said: "We'll generally treat them as we did with nofollow before and not consider them for ranking purposes." So a nofollow forum link is a hint Google may ignore, but you should not count on it passing value.
What 12 ranking guides tell you to do#
We read 12 guides that rank for forum backlinks: Wbcom Designs, uSERP, Stellar SEO, dofollow.com, WP Fastest Cache, Loganix, Respona, Mega, Tower Marketing, LSEO, Editorial.Link and Agency Platform.
All 12 publishers sell something, mostly SEO services or software. Eleven warn about spam or bans, and 10 mention nofollow. But 5 still recommend signature links, the pattern Google's policy uses as its spam example. Only LSEO mentions that example, and none quotes the policy. None mentions that Google has treated nofollow and ugc as hints since 2019.
Only 3 give any data. The most useful is Editorial.Link's own test: "I splurged $500 on 100 UGC links." Three years later, "only 11 links from the original hundred, are still indexed," and "each link ended up costing me $45." The same guide describes a site that "had placed around 3,000 forum links" and "lost almost 90% of them." Forum links disappear when threads get pruned, moderators delete promotional posts, or the forum shuts down.
dofollow.com is the bluntest: forum backlinks "are pretty much all but useless from an SEO perspective." Our data says that's too strong for technical forums and about right for marketing forums.
When forum backlinks are worth it#
They are worth it when you can answer questions on a forum your buyers already read. On a technical forum that leaves links followed, a useful answer that cites your documentation or data can earn a real link. On any forum, a good answer in a thread that ranks can send visitors for years.
They are not worth it when you post only to place links. Bought forum link packages, signature links and drive-by replies are what Google's policy describes, what moderators delete, and what Editorial.Link's test shows fading away.
Forum work is slow. You might earn a handful of followed links a year from it. Treat it as reputation and referral work alongside the outreach that brings in most of your links, such as guest posting, broken link building and digital PR.
Limits of this check#
We read one thread per forum on one day, choosing the thread with the most links in each forum's listing, which favours link-heavy threads. We read raw HTML without logging in, so content loaded by JavaScript and signatures hidden from guests were not counted. Reddit, Quora, Stack Overflow and many other forums blocked us, so the biggest communities are missing. Link counts include duplicate links. The 31% figure describes this sample, not the web. Guide tallies came from reading each article's text, and a few cells were judgment calls.
Where GenLink fits#
Forum work is something only you can do, because the reputation has to be yours. Most of your links will come from other site owners who don't know you yet. That is the outreach part: finding relevant pages, writing a personal pitch and following up. GenLink is an AI backlink agent that does that work. You describe your site in a short brief, and the agent finds the pages and sends the emails.
Frequently asked questions#
Are forum backlinks dofollow? Some are. In our check of 23 forums, 52 of 169 user links (31%) were followed, mostly on technical and hobby forums. Every marketing and business forum we read marked every link nofollow or ugc. Inspect a few member links before you post.
Are forum backlinks good for SEO? A followed link in a useful answer on a relevant forum can help. Mass-posted links and signature links can hurt, because Google's spam policy names "Forum comments with optimized links in the post or signature" as link spam.
Do nofollow forum links help at all? They can send visitors and get your brand mentioned in threads that rank or get quoted by AI assistants. Google treats nofollow and ugc as hints, but says it generally doesn't use such links for ranking.
Are signature links worth it? No. Google uses a keyword signature link as its own example of forum link spam, and forums often mark them nofollow. The one forum in our sample with signature links marked all 6 nofollow.
Why can't I post links on a new forum account? Most forums limit new members to stop spam. Discourse lets new users post at most 2 links per post by default, and Stack Exchange new users can't post links in comments until they reach 10 reputation.
Should I buy forum backlink packages? No. Buying links breaks Google's spam policies, and in Editorial.Link's test only 11 of 100 bought forum links were still indexed three years later.
The short version#
Forum links are not all nofollow, but the followed ones cluster on technical forums, and many forums only lift nofollow for trusted members. Pick a few forums your buyers use, check the rel, become a regular, link only when it's the best answer, and judge the work by visits. Then put the rest of your link building time into outreach. Write your first brief on the free plan and let the agent start it for you.
