The 90-10 Rule for Successful Twitter Networking
http://www.twitip.com/the-90-10-rule-for-successful-twitter-networking/

This made me wonder if there really could be an overlying theme or practice which could sum up in one sentence the most important thing you need to know to be successful using Twitter to generate buzz.

by Jack Humphrey blogs from The Friday Traffic Report (follow him at @bendtheweb Have you noticed all the electronic and tree-based books that have come out

Learn how twitter functions as a gift economy. If you want to gain more influence - then spend 90% of your time giving back to the community, and 10% of your time taking.

Successful Twitter Networking

Interesting article on how to contribute to Twitter