I tried the twit one time. I couldn't keep out the flood of spam and stupidity, so I quickly burned everything! But all these darling internet services have one thing in common -- they're free and they don't interfere with anybody. And they don't make money. As soon as they decide to turn the screws for revenue, they are spit out like a sour gumdrop.
So, can the twit-people figure out a way to stop burning money, and squeeze out the juice? It will be fun to watch. I know I can't live without my ads!