I want to insert ads in my Tweets

I made $7.92 thanks to my blog last month. But blogs are so last year. Now, like Miley Cyrus (who started at the same time I did), I'm Twittering on Twitter. The thing is, I got used to being paid for my hobby. Not much, granted, but who get's paid for their hobby? Anyway, I find the 140 character limit per post is plenty. So I have some room left over for advertisements.

Any ideas on how I can insert ads into my Tweets?