What are some fun virtiul games for kids

Clubpenguin.com (awesome)
Fantage.com (awesome)
Girlsgogames.com (fun for girls)
Runescape.com (awesome)
Panfu.com ( Ok)
Webkinz.com ( Ok)
Disney.com (fun)
Poptropica.com (awesome)
Pandana ( fun i think)
Build-a-bear ville (fun)
Moshimonsters.com