It used to be that pro-ana groups, made up of mostly girls who advocate anorexia, hid in the darkest corners of the Web. Not anymore.

Newsweek recently reported that these eating disorder devotees have popped up on Facebook for all-you know, like your impressionable kid sis, niece or daughter-to see.

The argument for (yup, there is one) having these sites on such well-known online networks is that they a) give these sick individuals a support system and b) get eating disorders out in the open so that their sufferers can actually admit they have them. We wonder, though, how positive it can be to read statements such as "i've had 200 cals today and im just trying to calm down before i go for dinner," and see photos like this.

While there's been no link showing the pro-ana sites have actually caused the nearly 7 million cases of eating disorders in the U.S., their opponents say simply looking at them can further fuel unhealthy behavior. Stanford professor Rebecka Peebles, M.D., coauthored a 2006 study that found 96 percent of teens diagnosed with eating disorders who visited pro-eating disorder Web sites learned new ways to diet. The sites can also give young women a sense that being anorexic or bulimic is okay since they are surrounded by like-minded people.
A recent Lemondrop search found about a dozen pro-ana groups on Facebook.

Fortunately, there are more anti-pro-ana groups on there, like the 1,467-member "stop pro-ana," started by a recovering anorexic. Equally impressive is the fact that the group's admins hail from various countries, showing that there's a global effort to stop these sites. There's been equal infiltration on both ends of the debate, with pro-ana members posting on the anti-ana sites and vice versa, like in the thread "Who are you to judge us?" on "stop pro-ana."

Are these groups allowed based on freedom of speech? No, according to Facebook's terms of service, which ban content that promotes self-harm or harm to others. A company spokesman told Newsweek Facebook employees search out and delete not only pro-ana groups, but those promoting bigotry and other unsavory practices.

Tell us: Should pro-ana sites be allowed on Facebook and other social networking sites?