Instagram, the mobile picture sharing social netowrk, has finally passed 100 million active users. This feat took around two and a half years and comes just a month after Instagram began releasing active user counts. Instagram was forced to start releasing active user counts after the terms of service fiasco that started back in December.

Comparing the service to other similar services, we can see that Instagram has done a better job at gaining user base. It took Twitter around six years to reach 200 million active users. Facebook likely helped boost Instagram's active user count.

CEO Kevin Systrom in the company's blog post:

It's easy to see this as an accomplishment for a company, but I think the truth is that it's an accomplishment for our community. Now, more than ever, people are capturing the world in real-time using Instagram-sharing images from the farthest corners of the globe. What we see as a result is a world more connected and understood through photographs.