PublicityHound (twitter.com/PublicityHound)
Joan Stewart is the queen of getting publicity and has developed quite a following. For any business looking to get more and better publicity, Joan provides a lot of free and low cost tips. On Twitter she mostly stays on task -focusing on Publicity, with just enough personal info to make life interesting
Mashable (twitter.com/mashable)
Pete Cashmore is so on top of what’s happening in Social Media and Social Networking that you’d be crazy to follow him on Twitter.
Copyblogger (twitter.com/copyblogger)
Brian Clark is seriously into social networking but he also posts great quotes like this recent one “I have no particular talent. I am merely inquisitive.” From Albert Einstein
Schwarzenegger (twitter.com/schwarzenegger)
The Governator actually has harnessed the power of twitter for good – using it to disseminate information and links useful to Californians. While not a Californian myself, I’d like to see more elected officials make the attempt to use new technologies to help them better communicate and stay in touch. I guess twitter.com/govritter should get mention as well since I live in Colorado.
MattCutts (twitter.com/mattcutts)
I’ve been a fan of Google since they started at Stanford – for real. Matt is a great public face for Google on Twitter. He lets you know what Google is up to and provides some really cool information such as how to link to a specific point in a YouTube video.