@Starstryder Pamela Gay is collecting a list of astronomy-related twitter users for a report on New Media for the Decadal Survey. . . check out her list, and add comments if you or other astronomers are using twitter.
We @WomenPlanetSci have made our own list of planetary science tweeple and science news twitterers … feel free to check out our “following” list. Tweet us and we’ll add you too! Our most recent tweets are over there in the sidebar; add us to your following list and they’ll show up automatically in your timeline.