Reason I think Facebook took Orkut's #1 place in Social Networking in India
But the new kid on the block, Facebook ate Orkut's lunch and Orkut couldn't do anything about it. Why?
In my opinion, it's because of the FB's success in the US Of A. People use social networks to share photos, get in touch with old friends and make new friends. When Indian students went to US of A for studies or job, they found all their American friends hooked on to FB and not to Orkut. That made them create accounts on Facebook and be less active on Orkut. As a result, their friends sitting in India had no option but to open FB accounts as well.
Then started "You're still on Orkut??" thing rolling out. Being on Orkut is like being in 2004 when the rest of the world is in 2010. Most of the FB's gain is because of the peer pressure created by Indians living in USA.
Why did you move from Orkut to Facebook?