What Virtual worlds for free and NO downloading

I play on this website all the time, and it's called Club Penguin. Club Penguin is a snow-covered, virtual world where children play games and interact with friends in the guise of colourful penguin avatars. Club Penguin is a safe and fun website for everyone. Good luck! :)

- Sally

Other really nice ones are:

www.ourworld.com
www.virtualfamilykingdom.com
www.gaia.com
www.habbo.com
www.dizzywood.com
www.moshimonster.com
www.whyville.com