How stop reciving fake traffic ?

I reciving fake traffic from China 7000 visits a day. I don't know how it happen. I don't want get banned from google.
Can google ban my website ?
What should I do ? How can I stop this fake traffic ?

This is link to screenshot what google analytics show:
http://img94.imageshack.us/img94/8416/trafficl.jpg

Thanks.

You know the traffic is fake and you don't know how you got it?

Somehow I don't believe you.

Just bookmarked website with BMD5 like other sites, nothing else.

Well.... it aint fake traffic if ppl is actualy pressing some bookmark you have made, or am i wrong here?

just make them click something 7k a day is not bad dude