The Twitter obsession seems to be waning among celebrities. Singer John Mayer, one of the micro blogging sites most high profile users with 3.7 million followers, shut his account on Monday. A spokesperson for the Grammy-winning singer said he had closed his Twitter account because his concert tour has ended and Mayer is preparing to go back to the studio.

Mayer used Twitter to talk to fans and address controversies, including a Playboy magazine interview in February about his sex life.

In a post on Tumblr last week, Mayer said he felt he had made the right move to the new site. Despite having only 50,000 Tumblr followers, he said his addiction to the new site is larger than Twitter.

Stars are realizing that Twitter may be great as a promotional tool or for reaching out to fans, but also has its drawbacks.

Teen singer Miley Cyrus deleted her account a year ago. Hairspray star Amanda Bynes deleted her Twitter account last week without any notice to her fans. Earlier this month, Disney starlet Demi Lovato, 18, tweeted that she's saying goodbye to twitter because she thought it was an intrusion to her privacy.

While through Twitter celebrities could directly connect and avoid other modes of communications like sending out press releases, many celebrities have found that their tweets are being made fun of, or blow up in their faces.

Although Bynes, 24, offered no explanation for quitting Twitter, she seems to have had a volatile relationship with the so-called Twitter verse. She got into fights with other users who disagreed with her tweets, including those about her taste in men.

Country singer LeAnn Rimes, who was an active Twitter user when her marriage ended after she cheated on her husband with married actor Eddie Cibrian.

After Rimes and Cibrian divorced their respective spouses, the duo was photographed kissing each other, which sparked outrage on Twitter. Her attempt at a defense only worsened the scene. She closed her account in July after tweeting that it was unhealthy for her and her family to read negative comments. However she reappeared on Twitter saying how much she missed her fans.

Comedian Ricky Gervais who joined Twitter last December because he was supposed to do a running commentary of the Golden Globes. He quit in less than month saying it was pointless after the show was over.

Reality TV star and model Kim Kardashian uses Twitter to successfully promote herself, the products she's endorsing, the careers of her sisters.