Transparency in reporting of major social network performance recently received a shot in the arm courtesy of WatchMouse. Using their Public Status Pages, WatchMouse now tracks 20 giant social networks’ uptime and other performance metrics at Social.DownorNot.com.

Specifically, users can view the performance speed and uptime of home pages, login pages, and APIs from Classmates, Del.icio.us, Digg, Facebook, Flickr, Foursquare, Friendster, Gowalla, Hi5, Hyves, LinkedIn, MySpace, Netlog, Orkut, Stumbleupon, Twitter, Xanga, Xing, Yelp, and YouTube. If upon automatic checking any site returns errors or takes longer than 8 seconds to respond, it’s marked as error and unavailable. The uptime percentage has its basis in the number of errors reported by such checks. read more