I am curious if anyone has heard of WideCircles internet viral marketing engine? I was referred to it by another webmaster. They work by publishing messages on various forum, blog, wiki, classified, etc websites. These messages then contain backlinks which help with SEO, as well attract lot of referral traffic. They bill around 0.40c per each post thats been active for 5 days and claim a single post can easily attract 100 or more hits a day, I am going to give them a try today and see how it goes. If anyone wants to check it out here is the link.