People keep asking about exactly how much they affect PR and whether 1000s are good for your site. First of all I'll start with an expirement run by SEO expert at DP forums. A member of DP created a brand new site with the name "SEO" in the URL. He added his site to his signiture on a few forums where his total post count amounted to ~18,000. This is 18,000 backlinks to his site (all forums were DOfollow). He noticed after a few months that his PR went from PR N/A to PR0. Of course, over time the PR of some of the threads he posted in with his signature may increase and therefore pass more Google juice but at the moment it seems that they do nothing. Here is some information I have heard from a member at another webmater forum, I think SitePoint. Here's some great advice: "=> Any page that has a link to your site and is indexed and not intentionally blocking the link is a backlink. => Only nofollow links don't help with SERPS all others are useful to varying degrees. => Not all forums use nofollow. => How the searchengine spider know the link as a comment or forum signature? A link is just a link to the SE spiders. => Search engines aren't stupid. Indexing and organizing billions of pages everyday shows they have the ability to discern quite a bit about the pages they index. => Google will not penalize you for having signature links. If it did I'd be banned 100 times over. => Google doesn't recognize a page as a forum. They only see it has a page. It has no more or less weight then any other page. => If that page isn't relevant to your site, the links won't mean much. Plus with their being so many links on a forum page there will be little PR sent your way as well. => Duh. Why wouldn't I put my links in my sig? I don't post here for the signature links, though. I post to help others and learn and using my signature is a great bonus. Especially when you are approaching 19,000 posts. => Just keep in mind that although the quantity of backlinks may increase from forum sigs, the quality of backlinks you have won't has forum sig links aren't worth much to the search engines. => Forum signature links have little SEO value. The pages are usually off-topic, PR is diluted to the point of virtual uselessness, and you can be sure having 15,000 links from the same domain is devalued. Signatures are best used to drive traffic to your websites and hopefully from there you can get backlinks from other webmasters because they like your content. => Forum signatures and most directory links have extremely little SEO value. They're just about as low quality as it gets. => Forum signature links send almost no PR due to the low PR of the pages and countless links on them. => Forum signature links definitely are not quality links. => The links themselves don't have a lot of SEO value is the point. I get plenty of traffic from my sig as well. And if your sitepoint sig provides most of your traffic you really need to start promoting your website! => Forum sigs have very little value. But they do have some value. I wouldn't go joining lots of forums for the sake of getting your links in your sigs. It's not worth the effort. Participate in forums related to your topics and participate intelligently. Yes, you'll get some links out of it, but the effect they have from that perspective will be minuscule compared to the traffic you get from members who appreciate your intelligent posts and want to see what you've got going on. => For me forum sig links are a bonus for participating in a forum. It definitely isn't the reason why I join a forum and post. => Posting in forums for the sake of getting backlinks through signatures is a waste of time. The links have such little value that the ROI is just awful. But if you participate in forums then you should take advantage of your signature as you can get decent traffic and maybe even find others wanting to link to you because they like your site. As far as your little experiment is concerned, I've changed my signature around several times and I have a crapload of posts. No significant changes for any terms I monitor. => 1) I do not participate at SitePoint so I can get signature links for ranking purposes. I participate because I enjoy the discussion and learning that occurs here. Before you were members here the SitePoint signatures were not visible to search engines yet I still accumulated 20,000+ posts so that is irrefutable. => 2) Since I have over 22,000 post I can tell you from direct experience those signature links don't do didly poo for my rankings. => 3) There's more to this world then SEO. I know you may find that hard to believe but it is true. Believe it or not people click on my signature links frequently. They do it because I (usually) offer helpful and insightful posts." So basically you're going to get more direct traffic than you will ever get from the "increase" in SERPs.
I have experimented a lot with signatures too. I do agree with most of what you have written. IMO, signature links from the same site have less incremental value. (I guess, this is true for all types of links). The first hundred links from forum will be the most beneficial. After that, as the member makes more and more posts, the value of the new links will get lesser and lesser. Thus making 100 posts (with signatures) on 10 different forums will be much more beneficial than making 1000 posts on 1 single forum. Signatures can have value if not-so-competitive keywords are targeted.
Paranoid question: Nobody knows the exact algorithm but is your link signature in a good neighborhood if it's in a forum where people are selling/buying/exchanging links? Do you think search engines care much about that? I am guessing not since, for example, pages on DP are indexed in google in just a few hours.
That original post has a lot of repetition... maybe comb through it and eliminate the repetition... all in all its a good break down about signature links.... Like the author of the original post, I get a bunch of traffic to my site, so search engine benefits or not, it helps.
As with every SEO tactic, you should mix signatures with the other links - articles, directories, relevant sites, ... And, of course, I get clicks on my signatures too!
Don't put too much emphasis on link power from a signature link, just look at it as free advertising.
true, but the majority of my traffic as always come from organic SE work. edit: the majority of my profitable traffic.... /edit.
I agree with you, forums is where you learn new stuffs, meet friends/ enemies sometimes...lol. But you must take the benefit of putting your sigs. Whether it passes a lot of link juice or non at all, it is still a link. but don't rely too much on it. There are bunch of ways to get links and traffic. All you have to do is perform you seo task as scheduled and enjoy. SEO is not an overnight thing so, be patient and soon all you hardships will pay you. Cheers