This is pretty cool, but it would really impress me if it could autocomplete facts based on contexts. I wish I could open a text editor and begin writing while Anycomplete(-plus) crawled the web for links to factual data based on the writing so far. Otherwise the context switching is time-consuming and discouraging.
That seems both really cool and absolutely terrifying. Automatically find references when writing a tutorial? Hell yes! Automatically find references to support an argument you've decided to make? Hmm... maybe not a win for journalism.
[edit] Actually, I guess the way you described it, it could go the other way. You start writing some argument, and google shows you some stats that show you're wrong, or something. That would be neat.
DEVONsphere does something close to that. It does a simple keyword analysis and searches local/web. But what you are describing is more of a personal research assistant that's way beyond what today's system can do.