Instagram has released version 2.5.1 for their mobile app. The update states that it includes bug fixes, as well as new support for Flickr authentication.
Instagram is the social photo sharing network that has recently reached 80 million users. According to the Instagram website:
Instagram is a fun and quirky way to share your life with friends through a series of pictures. Snap a photo with your mobile phone, then choose a filter to transform the image into a memory to keep around forever. We’re building Instagram to allow you to experience moments in your friends’ lives through pictures as they happen. We imagine a world more connected through photos.