IMVU, There, AIM, and Meez. Dream Avatars or tektek Ourworld, Habbo.com My Animal Family at MAFkidsclub.com is safe for younger kids.
Stardoll
yahoo
a really good website is weeworld
her name is Yangchen and we dont get told the avatars before Yangchen
Gaia Online has some pretty good manga avatars
probably Quagmire
Asia.
ask a moderator or a helper
The really cool ones i know are : Sparkcityworld.com (for girlz) Zwinky.com (for guys and girlz) pandanda.com (for guys and girlz) roblox.com (for mostly guys but some girlz) stardoll.com(for girlz) girlsense (for girlz)
There are many name meaning websites out there. See the Related Links for some of the most useful ones.
One name of the sites is babydow.You can design your own baby, give it a name, and all sorts of things!The age reccomended is 4-16.
The best way to get secret avatars on neopets is to find a website that lists all of them and shows you how to get them. Sunnyneo and Avatarlog are two good sites. Some avatars take more work to get than others.