Twitter founding fathers: Evan Williams, Jack Dorsey: If you're curious about how best to sum up your thoughts Twitter-style, check out the feeds of some of Twitter's co-founders. Evan Williams (http://twitter.com/ev) Tweets about life: "Walking downtown for a haircut and massage on a cloudy, but balmy, San Francisco" and technology: "My computer just let out a super loud electric pop (!) and died when I pulled out a USB cable. Freaky! (Surprisingly, it turned back on.)" Meanwhile, Twitter CEO Jack Dorsey (http://twitter.com/jack) is more succinct: "I have $3.50 in my pocket"; "Working"; "Buying an electric toothbrush."