How to make money from twitter?

Ever wondered why all the celebrities are joining twitter? Charlie sheen said “I am unemployed” and joined twitter. So how is he making money? Who is paying for tweeting?
Here are few budding ad agencies buying tweets. Be a magpie and ad.ly are some of the new age marketing firms. You can join these ad agencies and sell your tweets. You need to tweet their ads. Anyone over 18 years of age and a Twitter account can register as publishers on the Magpie. You should also have a pay pal account.
Earnings are actually depends on your followers, more followers more money. Recently one cent, Kim Cardassian, Charlie sheen joined twitter and earning big buck.
Good luck tweeting!