Mark Cuban has suggested that Microsoft simply pay sites to be removed from the Google index. This is his big idea to even the playing field and make search more competitive.
This. simply. will. not. work.
All that will happen is those sites will get less traffic. A LOT less traffic. No one will go to Bing to exclusively search 1,000 sites. The general public doesn't keep up with the politics of search enough to care about that kind of crap. They would just think that Microsoft is being a big evil corporation, and they'd turn on the publishers who removed their sites from Google index.
Perhaps Cuban should stick to getting in trouble with the NBA with his Tweets.