Are there any niches taking off using SMS (Short Message Service) besides person to person text messaging? It seems like a natural way to pass simple data between people and applications and it's had alot of promise but I haven't heard much.
Server to administrator SMS is a niche to think about. Very profitable if done correctly and its an essential tool for anyone that rely on servers for business.
I couldn't see the revenue for search engines than Adwords came along. I couldn't see the revenue for unlimited, copyright infringing video hosting and then millions were spent on advertising. There's gotta be things out there that will provide value and be an advertising opportunity.