Some may remember yfrog as the photo sharing service previously associated with Twitter. However, since Twitter's launch of it's own internal photo sharing service last year, Yfrog has been left worse for wear. Despite the effects of this, Jack Levin (ImageShack founder) has not accepted defeat and has bravely entered the social networking arena to meet the giants face to face.
Favstar, a service that helps users "find great tweets and interesting people to follow", has announced that it will be shutting down next month because of changes Twitter is making to its APIs. Favstar's creator, Tim Haines, was left with no choice but to shut his service down due to API changes.