Hashtag Gets Gaga in Trouble 'Pop singers don't eat'? By Evann Gastaldo, Newser Staff Posted Apr 12, 2012 10:25 AM CDT Updated Apr 12, 2012 10:57 AM CDT 2 comments Comments Lady Gaga poses with a "We pray for Japan" wrist band during a press conference to promote MTV Video Music Aid Japan in Tokyo Thursday, June 23, 2011. (AP Photo/Shizuo Kambayashi) (Newser) – Lady Gaga has spoken out on the importance of healthy body image, particularly important to her since she once struggled with bulimia … so why did she think it was a good idea to use the hashtag #PopSingersDontEat? According to the Huffington Post, a firestorm erupted after Gaga tweeted Tuesday night, "Just killed back to back spin classes. Eating a salad dreaming of a cheeseburger #PopSingersDontEat #IWasBornThisWay." Many of her fans expressed their disappointment, and on its Twitter page, the National Eating Disorder Association responded: "Huh? This is the same person who recently implored girls to stop dieting?" Celebrities and Twitter don't always make for a great combination, as evidenced by these other brouhahas: Chris Brown has had more than his fair share of Twitter troubles, but the worst offense may have been his rant after throwing a chair through a window at Good Morning America. He was unhappy at being questioned about Rihanna, and tweeted, "I'm so over people bringing this past s**t up!!!" Justin Bieber apparently thinks it's hilarious to tweet phone numbers. Most recently, he pretended to tweet his own number and ended up deluging two Texans with phone calls; he had pulled the same stunt once before to get revenge on an enemy. Ashton Kutcher's ill-advised Joe Paterno tweet caused him to step away from the Twitter for a while—and reportedly also caused Demi Moore to leave him. Just yesterday, Courtney Love took to Twitter to accuse former Nirvana drummer Dave Grohl of seducing her daughter Frances Bean Cobain. Click for more celebrities who should keep their mitts off of Twitter.