Kids who use chat websites to swap pictures and personal details might be in danger, experts have warned.
Sites like Bebo which let kids chat and swap information are very popular, but some people are worried strangers might use them to get in touch with you.
The people behind Bebo say it's safe, and point out every page on it has a link to a list of safety tips.
You should be safe online as long as you only speak to people you know, and don't give out personal information.
Some schools have banned Bebo from their computers because they're worried that people on the site might not be who they say they are.
Bebo, which started in 2005, has 22 million members, and is very popular with school kids.