This weekend I was alerted to stay away from Quechup, a sketchy social networking site. (Thanks Mike @ ConverStations!)

Here’s how it works: You receive an invite from a friend asking to join them on Quechup, similar to how you’d be invited to MySpace, Facebook, Twitter, etc. If you’re not careful, Quechup will then wrap its tentacles around your personal address book and spam all your contacts with unsolicited invites.

Quechup being evil is old news — I’m posting about it because this is a fine example of bloggers banding together and using the power of social media to stunt the propagation of spammy practices.