I know no one wants to hear this but... Facebook. It does the same thing. With less character limit, more functionality and equally huge (actually bigger) user

I know no one wants to hear this but... Facebook. It does the same thing. With less character limit, more functionality and equally huge (actually bigger) user base. Sure we can all go and re-invent the wheel for the 800th time (I am still fond of my ex company myspace!) but if you just want to move away from twitter TODAY there's Facebook (and instagram)