ZiggityZoom is a great kids website with educational content. They also have a terrific and lengthy List of Best Kids Websites. It's a very good comprehensive list.
Marapets is a great site that's safe for kids. It has tons games, contests, customizable human characters, quests, missions, item/pet trading, battles, contests, giveaways, prizes, tons of free...
some are andkon,mostfungames and coolchaser.here are some clubs for kids,chobots,clubpenguin,and mydinos. Also some good sites that the last person missed are: Howrse (For horse-lovers, mainly girls)...