There's a huge difference between "nofollow" and blacklisting a search engine- as the link I pointed out shows, google is still pulling in their information and

There's a huge difference between "nofollow" and blacklisting a search engine- as the link I pointed out shows, google is still pulling in their information and displaying it in search results. They're just not giving it preferencial treatment like they are Google+. Seriously, try the browser extension or tools setup on the link I sent- they use Google's own results, they're not just injecting things randomly.