In looking through our analytics reports we're noticing that Twitter is one of our Top 5 referrals. We haven't done much Twitter marketing so that really surprised me. We've definitely decided to do a lot more in terms of promoting ourselves on Twitter this year. I'm looking for some good articles about this. Two of the best that I've seen so far are from Guy Kawasaki (linked below). What other great articles would be good to read on this subject? How to Use Twitter as a Twool Looking for Mr. Goodtweet: How to Pick Up Followers on Twitter