A few years ago when SEO just started to become very competitive most people were scrambling to get as many links to their sites as possible. They didn't care about the quality of the links, if there was relevant content on the page, anchor text, page rank of the linking domain, etc. But now things have changed, no longer do people want as many links as possible. Many SEOers believe that too many bad quality links actually do harm to your site's SERP results. And since Google has started the "NoFollow" tag which means that the spider doesn't follow the link or give you any credit for it. One of the easiest and quickest ways to get some fast back links was to comment on people's blogs and use links in the body of your comment and for your name. But now most blogs automatically use the NoFollow tag on any links in the comments section making this practice pretty much futile. There are still a few blogs out there that pass on their link juice to links left in the comments section but for the most part the only good a comment link will do is if somebody reading that blog clicks on your link. Some search engines count these links, and of course nobody knows exactly what is in the search engine's algorithms but most people in the SEO field seem to agree that NoFollow links don't count for anything in the top three search engines - Yahoo, Bing, and of course good old Google. So next time you see an offer for 10,000 backlinks from blog comments for $10 you know that it isn't even worth that. The better way to get quality links and real organic traffic is to take your time to get high quality links. Submit press releases to attract links and articles from real people, not automated scripts. Create useful articles that are relavent to your site and the site you post it on. Post good answers to people's questions in forums and other sites. Submit to high quality web directories like DMOZ. Create a real blog with lots of good content for your site with news and info about your products or services. Don't spam the entire web just to get a few crappy links. It won't help and many people claim it could actually harm your SERP rankings. So just like they taught you in school - don't follow the crowd, just say NO!