I wonder what would happen if google blacklisted all facebook.com URLs. when I search for things, the first or second link is usually a company or fan FB page a

I wonder what would happen if google blacklisted all facebook.com URLs. when I search for things, the first or second link is usually a company or fan FB page and if those were removed from Google's index, I wonder if that would have any affect on this graph. Another thought, FB has become my IM... I spend a majority of time on there chatting, not clicking from page to page so FB's display ad's would be mush less effective to users like myself because the time I spend using there platform to IM is irrelevant/less valuable in relation to google sites.