I've just spent about an hour superimposing my ranking graphs on top of the facebook pages insights graphs. (weekly total reach) And I'm seeing some close matches. I'm seeing matches on all levels of keywords (from <100 to 1220000). Now this is the bit I hate to say - the facebook page is genuine, with about 90% of it's 20K fans not being fake, and the virality level of the posts seems like it needs to get over about 6%. I've been testing this for about 6 weeks now and getting most posts up to between 4 and 10% virality. I haven't got time for shit like this!