Any of you Twittering out there?

     Why not find another way to reduce productivity and kill time. I joined Twitter: http://twitter.com/mcalbucci

     Twitter doesn't let me import my contact list from a CSV file, only from online web-based email services, and since I don't use GMail, Yahoo or Hotmail I don't have an easy way to see which of my friends are on Twitter.

     Do you know any app that would make it easier for me to find who's on Twitter based either on a CSV file, or on my Facebook/LinkedIn profile?