Recently, I have been twittering under the name AccountingWEB as we build the readership to that web site. I have found over 1,000 professional accountants on Twitter, arguably the most cutting edge of the new social networking tools. You guys rock!
If you don't know Twitter, it's a messaging (they call it "micro blogging") web site that allows you to post messages of up to 140 characters. You can then "follow" others, meaning that their messages will appear in your account.