Summary

Mashable has fun list of ways to use Twitter to find a job. Some of the hints:

Whether or not you're searching for a job, make sure your Twitter stream represents you as a professional individual that has important and unique thoughts to contribute. Your goal should be to become an industry expert - or at least tweet like one.
You can find general job advice and lots of listings through hashtags like #jobs, #recruiting, #jobadvice, #jobposting, or, to get more specific, #techjobs.
Don't be afraid to research the companies that you want to work for to find out who currently works there and who is involved with recruiting. After all, while you're searching for a job, recruiters are scouring the web at the same time looking for pertinent information about job candidates.
Twitter is all about networking, so build a network that makes sense for you. You¿ll find that a lot of the opportunities that are presented to you are simply organic.
-- Don Willmott