While I agree that #1 and #2 are the biggest drivers for acquiring Roomba, I find it hard to imagine Amazon executives not actively discussing in-home robotics as a vector for increased data collection. It might be a few years out, but it will happen.
There are a lot of strange spots in Russia. I was looking at a spot south of the Pechora Sea on the light pollution map, then comparing it with Google Maps/Earth. I can't see anything that would correlate with that much light.
I thought the exact same thing about the web as being a library. It's nice hearing someone else say it, it's validating.
However, I feel like it's moved more in the direction of being like broadcast television: lots of content that's designed to be consumed once and then forgotten. Maybe the television analogy oversimplifies the matter. Still, I think the more that content creators view their content as going into a permanent library, the better the quality.