Facebook-owned Instagram, despite negative publicity surrounding the controversial terms of service brouhaha, continues to grow its installed base. Today, the company announced a major milestone: Instagram now has over a hundred million active users across mobile platforms. That's ten million more active monthly users since it announced the 90 million milestone on January 17. By comparison, Twitter over a six-year time span hit 200 million active users, as of end of 2012.
Commenting on the development, Instagram co-founder Kevin Systrom shared an anecdote in a blog post about how he realized Instagram was going to be different when fans at the Giants Stadium starting posting their Instagrams after another co-founder "with a few quick commands at his terminal" filled the service with images of the game...