I agree in that you should keep it to premium one-word domains and investment domains like LLL.in's. Keep in mind, this is a growing market/industry so don't expect to make huge profits right away. If I were you and looking to invest, I'd be planning to stack up a small portfolio of solid names, and then be prepared to sit on them for a bit. Good quality one-word IN domains and short LLL/NNN.in domains are probably the best to invest in right now.