What are some good websites for 12 and up preteens?

I recently wanted to make a twitter and myspace but because i not really @ the age limit it wasn't fun for me. I want a website that i can go and chat with my friends, Post My Status & Mood, Play Games Add Apps, And it should be age appropriate please help! Now i know i lot of websites so please don't say...myyearbook,stardoll,facebook,i-dre… myscene,gizmo,everyonespace,profilejunky… MOST IMPORTANTLY! i don't want to download or have to purchase anything!