Facebook's done it again -- proving anew how much fun and useful social networking sites can be as a result of another "controversy."

This time it's over how much skin is allowed when moms post pictures of themselves breast-feeding their children. Facebook decided that one of its Facebookers, Kelli Roman, showed too much skin and took her picture down.

Facebook spokesman Barry Schnitt told Reuters that the site takes no action over most breast-feeding photos because they follow the site's terms of use but others are removed to ensure the site remains safe and secure for all users, including children.

"Photos containing a fully exposed breast (as defined by showing the nipple or areola) do violate those terms (on obscene, pornographic or sexually explicit material) and may be removed," he said in a statement.

"The photos we act upon are almost exclusively brought to our attention by other users who complain."

Soon, a protest page called "Hey, Facebook, breastfeeding is not obscene!" went up, followed by events like a Dec. 27th online gathering that organizers claim attracted over 11, 000 people for its first ever M.I.L.C. (Mothers International Lactation Campaign) event.

Well, of course breast-feeding's not obscene and no one's saying it is, especially Facebook, which made it clear that plenty of breast-feeding images are on the site. But on the Web, sometimes all it takes is bit of conceit, such as suggesting that Facebook is against the natural way of feeding an infant, to stoke protest.

In this case though, everybody who posted, or read through some of the posts, are winners. Why? Because they're giving form to what's appropriate in public -- online and in the physical world.

In this case, the public square is Facebook. Many members made the point well to some of the moms who think it's OK to let everything hang out with their breast-feeding images: If you don't like it, then create your own community.

(It's even a chance to point out to some posters that slapping LOL at the end of every sentence is just annoying and distracts from their message.)