A Pivotal Pivot

By all measurements, the new picture sharing service, Instagram , is exploding. A week after their launch, they had 100,000 users . A week later: 200,000. A week after that: 300,000 . And then they were made Apple's App of the Week in the App Store. So yeah, basically they're likely far past a half a million users already. Not a bad first month at all. But did you know that Instagram almost wasn't Instagram at all? I detailed some of their transformation from the location-based HTML5 app Burbn to Instagram in my initial preview of the app. But co-founder Kevin Systrom gave more insight a few weeks ago on Quora .