Orkut

I was introduced to Orkut by lenin anna. The site is amazing! You have groups there on virtually every topic imaginable, right from hacking to A.R.Rahman songs! Because you can only join when you are invited by an existing member, the community is full of friends! Lots and lots of great information is available here. Its in affliation with google, so you can use your gmail id to register at orkut. Its a very informative site!

orkut