Online sources are reporting that Twitter had shown interest in acquiring Instagram though the talks were never in serious nature.
Instagram recently sold out to Facebook for a cool billion dollars.
Reports say that Twitter founder Jack Dorsey was a huge supporter and fan of the service and he seems to have stopped using Instagram since the acquisition.
Twitter can take a lot of credit for the popularity of Instagram over the web though the service also deeply integrates with Facebook and other networks.
Remains to be seen if Instagram continues to flourish under Facebook. It would certainly have done well under Twitter though Twitter probably could not have afforded the 1 billion price tag.