If you allow your children to surf the web and want to get involved, it is advisable to keep your PC in a public area of your home where you can monitor your children’s activity, and set time constraints for usage.

To get more involved, find kid-friendly sites and visit them with your children, instead of letting them browse alone. Start when they’re young to introduce them to kid-friendly sites you find valuable.

For example, Linkopedia lets you choose from among dozens of categories like learning, games and activities, coloring, crafts, songs and animal sites. KidSites.com is a guide to the best children’s site the Internet has to offer, while Digital Trends details its top picks for kids’ sites at http://www.digitaltrends.com/how-to/ten-best-websites-for-kids/. At Whyville, one of Digital Trends picks, a child can create a cartoon character and play a game in the cafeteria that teaches good nutrition. If the character eats fattening, high-calorie foods, the child will see the effects as the character becomes overweight and unhealthy and may be advised to see the Whyville nutritionist.

Also see,

How can I guide my children on using social networking sites safely?

What social networking risks should I talk about with my children?

How do I protect my children’s personal information on social networking sites?

Are there family-friendly social networking sites to share photos and events?