"I am going to write an app that allows the user to send pictures to their contacts!"
I guess one must have a fair bit of userbase karma + mystique to successfully reinvent the wheel, to make a funnier-to-use wheel that actually gets used.
I don't really think we need social networks as they're now understood. About 10 years ago when MSN Messenger was popular, I had the idea of having an interactive contact list for one's cell phone. One where I could see that my friend is "in the shower, out in 10" or where I could send a picture to a contact, etc.
I guess one must have a fair bit of userbase karma + mystique to successfully reinvent the wheel, to make a funnier-to-use wheel that actually gets used.