What Did Google Buy, and Why?

YOU OWN THIS?This map of companies purchased by Google is insanely useful because first you realize that you have no idea what any of these companies are and then you realize you have no idea what Google is up to. I am looking forward to someone explaining it to us; I will report back in short order. One item of interest: they have no interest in news, having purchased only one “news”-related company, FeedBurner, which is actually an RSS service and, more importantly, an RSS ad delivery system.