My Space, Orkut, Friendster, netlog, faceparty, bebo, facebook, tagged, MSN spaces, Yahoo spaces, etc...
I think some good virtual game sites for tweens are fantage, movie star planet, club penguin, and more.
a great website for young boys is club penguin. my younger brother loves to play with his penguin and puffle friends.
I think Imvu is fairly good and maybe weeble.
Yeah, I'd recommend babydow.comThat's cool
naruto-arena or soul- arena fusion fall
moshi monsters is good for girls and boys so is secret builders and games2girls.com
virtualfamilies.com
Here are some popular sites:NeopetsIcepetsPowerPetsWebkinzSee related links below.
There are many "Cool" virtual game sites.
Webkinz.com, babydow.com, pixiehollow.com, superpokepets.com, and howrse.com are all good Web sites for kids.
horseland, howrse is awsome
Here are suggestions from a variety of WikiAnswer contributors (WikiAnswers cannot of course guarantee the suitability of websites).millsberryhabbo (virtual and chat)imvumeezpixiehollowmoshimonsterseverythinggirlgirlfriendtotalgirbratzcleogirltalk.forumotionclubpenguinpopcornlandcloudsanriototolandwhyvillesmashmoutheverythinggirlstardollgirlsensebarbiegirls