Here’s an article that shows the various way people and companies are using twitter. Also, elance (the article’s publisher) is a great resource anytime you need a contracted project done like a brochure, website or whatever. Just post your project description to elance, and start receiving bids in minutes. I’ve used it many times myself with really nice results; I’ve had a few websites built by companies in Pakistan, for example, for only $700 whereas the American bids ranged from $1,500 – $4,000. The finished product was great, too.