As described at Twitter: Twitter is a service for friends, family, and co–workers to communicate and stay connected through the exchange of quick, frequent answers to one simple question: What are you doing?
It’s a hot Social Networking tool, but monetization with Twitter profile was unknown to me. Recent find out of Twittad.com can solve your question of: How to Make Money with your Twitter Profile?
Twittad.com hangs advertisement upon purchase through it in your Twitter profile. This is simple to start and simple to use. Just sign-up, update profile, set price rate for advertisement in your Twitter profile, and wait for ad-purchase by some advertiser. Here is how Twittad works:
Twitter Monetization source: Twittad