I have a theory (at this point) that Google has used profile analytics
(not a bad thing per se.) to drive the rollout of their new Knowledge
Graph service. I've dropped a post on G+ with links to a Google Drive
folder with screenshots that feed my current theory about profile driven
rollout. Basically, you have two users (distinct profiles) issuing the
same query, with different results.
I am interested in finding out how many of you actually see the new
Knowledge Graph sidebar.