What are some good websites for 10 year olds to play on?

What are some good websites for 10 year olds to play on?
Most kids like to play Runescape. http://www.runescape.comYou can also play on Miniclip(www.miniclip.com), Addictinggames (www.addictinggames.com), or Line Rider( www.linerider.eu).These are the ones for boys anyway.The only popular websites for girls are, Build-a-Bear (www.buildabearville.com), Barbie (barbie.everythinggirl.com), and Girls Go Games (www.girlsgogames.com).These are the only websites I know people play on. There are others but those are not as successful as these.*If you want to Ptp(Pay to Play) then you can get World of Warcraft or Webkins.**World of Warcraft has a free trial at www.worldofwarcraft.com