Celebrities have a love-hate relationship with Twitter

Singer John Mayer has mixed feelings about Twitter. In a recent interview with Eonline.com, Jennifer Aniston's ex-boyfriend called the social networking site "stupid," which is interesting considering he has a Twitter account with more than 291,000 followers.

Here is a recent tweet (Twitter message) from the Grammy Award winner:"You ever tweet something and then feel compelled to spend the letters you have left? I mean, have you? Seriously? So yah. That's all."