SEO Warlock will create thousands of these referral links (backlinks) pointing back to your site to help improve your site’s popularity, thus increasing your rankings and increasing your popularity.
So, in essence they are horrible horrible people that deserve a slow painful lingering death? Gotcha.
Haha. Call it what you will, but they offer a relatively cheap service that helps keep you ahead of the game. Unfortunately, commenting on thousands of articles and trying to get your link out there is very time consuming. Not to mention, most of your competitors are probably doing it. Gotta stay ahead of the curve sometimes... and if spending a couple of bucks can save you a few days work, then why not