Originally Posted by PornMD

People that make the assumption that no serious buyers ever offer through a gmail or hotmail are kidding themselves. Sometimes buyers want to remain anonymous...what do I care if they do if they end up buying? I've sold a lot to such buyers and to buyers who didn't start with an offer...both of those things don't mean they're not serious. Sure, a lot of timewasters do those things too but no reason to never respond to them.