From 25,000 users in the first 24 hours, Instagram grew to 300,000 by Week 3, and then into the tens of millions.
The big question is exactly how they grew so much so quickly.
From 25,000 users in the first 24 hours, Instagram grew to 300,000 by Week 3, and then into the tens of millions.
The big question is exactly how they grew so much so quickly.