Twitter Monetizing

Does anyone has ever used twitter such as selling ads space or putting some banners or affiliate links, in against to earn money? Does it give a good payoff? If yes somebody has used then how many followers do you have and how much do you earn? Too many question I guess, but I am wondering do people abuse twitter in that sense for getting money?

twitter is not very useful for seo. and not very fits for publish AD.

yeah agreed with jacksmith. Though I believe twiiter are do follow as I noticed I get Backlinks from twitter.

Twitter is good in direct marketing or getting leads for your business for example. Although it doesn't help that much in SEO, you can still make money easily if you treat it as a marketing tool for your product or online business.

I learned this from the advice of Stephen Pierce. You may want to do this as well. Check out http://www.TwitterMoneyTree.biz for details.