I have a kids aged 8.
I played the Dinokids with my kid.
He really likes it.
I think the content is well balances between educational and gaming.
I recommend this web site for kids.
I played with my 4th grade girl. The most impressive one are very cute dino characters and fine animation backgrounds with no violence.
We enjoyed it very much.
Stay away. A hangout for perverts pretending to be kids.
I saw users giving out phone numbers and soliciting contact. Kids get to have a room (really a bedroom) where they get to invite other back to. The sole activity seems to be making girlfriend / boyfriend relationships. This site is so scarily off-base it's not funny. I blocked my 8 yro from accessing it.