Well, maybe not forever. But Wednesday's announcement that popular iPhone photo app Hipstamatic can now post their snapshots directly to Instagram's photo sharing network is pretty huge. This marks the first time the Instagram API has allowed a third-party app to add content to its growing social network, clocked at 27 million registered users earlier this month. For developers who couldn't wait for Instagram to publish its API (resourceful hackers reverse-engineered the system back in December, 2010), this could be the beginning of a beautiful friendship.
While map mashups are what have defined this genre of application, the second most popular type of web mashup here on ProgrammableWeb are photo mashups. How popular? Just this past week the number of photo-related mashups passed the 500 mark, and there are now 505 listed.