Best online virtual world is Second life.
Second Life is best virtual world for teens.
The best virtual world I've joined is called Onverse.
There.com
Try xivio, it's a free 3D virtual world.
IMVU
The internet.
Millsberry World
The best virtual world for tweens to play on is www.ourworld.com. it is easy to get started on and entirely FREE! On most virtual worlds you need to purchase a membership but on ourworld you don't. Most of the items are available for ALL members. www.ourworld.com is the best website for a tween virtual world.
the best virtual world where you can do, say, and act anyway like has to be Smallworlds.
Animal Jam
ONVERSE!it is the best virtual world sign up here