Link Building schemes tend to collapse later than people think causing others to join through a false sense of security.

FatJoe and Gotch SEO – link building disasters in the making?

First came the likes of SEO Nuke, massive link building operations that worked for a while before they (and the sites that used them) were sent to oblivion by Google penalties and algorithm updates. Then came article sites, article spinners, link wheels and networks such as MyBlogGuest. Once again those who used them benefited for a while until, once again, Google caught up with their systems and devastating consequences were felt by those who had believed them to be ‘safe’.