They will all do social networking. IMHO the best phone is the upcoming Samsung Fascinate. It has a 4" screen, which is a very good size. Many people feel the Droid X is to big.
I worried that the Droid X might seem too big. It looked kind of big before I had one. I've had it a few days now, and the more I have it the more I wonder how I ever could have wondered about it being too big. Very comfortable with it.
I need a device that helps me with social networking and is a fairly good size. I want to get my money's worth. Which droid do you suggest?
By definition, when a person says "Social Networking" I think "Motorola BLUR," but because I have a distaste for anything MotorolaBlur, I would suggest HTC Sense, AKA Droid Incredible. Sense just does things more elegantly.