I recently watched an interview Julian Assange (WikiLeaks founder) where he stated that Facebook is the most appalling spying machine that has ever been invented. If you care to watch it here is one link at MyNews.us.com:
WikiLeaks On Facebook Spying

It is also on YouTube but seems to have some audio problems. In any case, I would like see the some poll opinion results for this.

Question:
Are you concerned about Facebook sharing your information with the government?

Choices:
Yes
No
Not Sure
Do Not Care