Instagram have announced that the photo-taking and sharing service now has passed 80 million users, a 60-percent increase in the last 13 weeks. Instagram infrastructure engineer Rick Branson wrote in a tweet "we now have >5.7m users per employee", with Instagram having 14 employees, the math is simple, Branson adds "We're hiring :)".

Instagram have had a fun-filled adventure, with the service launching in October of 2010, and only took the company a year and a half to hit 50 million users, which the company announced back in April. This means it took just three months to add a 30 million users. The growth that Instagram are experiencing is quite amazing.

Up to now, the 80 million or more Instagram users have shared more than 4 billion photos, mostly of their food in front of them. That last bit was a bit of humor from me, not actual fact.