From The New York Times: Twitter, After Number of Users Surges, Turns to Ads
I will never knowingly forward, retweet, or otherwise bring attention to a paid ad on Twitter. Nor will I click on any, nor purchase from anything promoted on Twitter. For a while, it was the only ad-free place on the Net, and I enjoyed the idea. Now it’s just another crass, crude area designed for marketers to pick your pocket.