Twad.ly – Bloggers, let someone sponsor your tweets!
-In-Stream advertising for Bloggers
-Smart way to monetize tweets
-Displays sponsored tweets on twitter blog widgets
SponsoredTweets – Twitter advertising that pays to tweet
-Get paid to tweet
-Set your own price
-Every tweet needs to be manually approved by you
-Disclosure is a must
-Payouts once your account reaches $50
Twivert – get paid to tweet
-Twitter advertising network
-Get paid for tweeting based on number of followers or clicks
-Payouts made once your account reaches $30