Social networking sites, such as MySpace, Bebo and Facebook, are fantastically popular with children - even with children as young as 8 & 9.
These sites allow children to be incredibly creative online, keep in touch with their friends and express themselves using a whole range of different media, such as video, photos, music, message boards etc.
However, it's important to recognize that while this can be fun, there are potential risks including cyberbullying, contact by adults with a sexual interest in children and the misuse of personal information.
There are tools on social networking sites that can help you stay in control of the information you post.
Perhaps the most important of these are the Privacy settings.
You can set your profile to private, where no-one can see it.
To friends - where your profile is private to everyone except those friends you allow.
Or to public, where anyone can see your profile.
It's really important that you talk to your children about these settings and help them think about the consequences of giving too much personal information and who they could be disclosing this information to, both now, and also in the future.
There are also tools to help you block contact from people you don't want to hear from.
And tools to allow you to check or approve comments others are posting on your pages before they go up on the site.
As a parent or carer it's really important that you too get to know these services.
Why not set up your own page and understand the appeal.
You can also then go through these 6 tips with your children so that they know how to better stay in control.
The Social Networking providers have produced a good-practice guide which you can access in the INFO centre
Childnet's Digizen website also has some great information to help you evaluate these services.
(Go to www.digizen.org to find out more.)