Here are some you could check out
I hope you like them
Well deres fantage clubpenguin ourworld (some people r weird) and if you want something for
older ppl imvu meez runescape
Ive heard roblox is good for kids, as well as toontown. Toontown is cooler and is for all ages/
I like girlsense.com but that is only if you like to dress-up dolls. I also like nicktropolis, millsberry, moshimonsters, and webkinz. Another good site is ZwinkyCuties.com, It is like Zwinky but for younger people.
Hope You Like Them
Poptropica blog help and online kids
Maybe webkinz I guess. But first you have to purchase a plush to get in. Or then your just out of luck.
Club penguin, super poke pets, pixie hallow, habbo (not recommended for young people), pandana, divachix, fantage, ecobuddies, tinierme, imvu, barbie girl (not recommended for young people), webkinz (requires purchase), shining star (requires purchase), bittybay
hope this helped!!
Clubpenguin, weeworld, imvu, pixie hollow, dizzywood, ourworld, neopets, webkinz, and wizards101. Hope I helped you out