Social networking sites are quickly becoming the go-to vehicle to organize parties and even larger movements.

Now some parents are using social sites to organize parties of their own called "pox parties," where parents can arrange get-togethers to spread chicken pox.

It's a controversial route for parents who don't want to vaccinate their children. Some are even ordering chicken pox- infected items like lollipops online.

The trend has made some pediatricians nervous.

"Who's to say that these other children really had chicken pox?" Dr. David Arkin, a pediatrician, asked. "Maybe they had some other illness. Maybe they had something else that could spread. Maybe they had something more dangerous."

"It's like asking a stranger to send you personal items, and then you're going to expose your child to them," he said.

Organizers say the parties have been going on for years. This is just a new way to spread the word.