Under “collaborative filtering and recommender systems”: The real point and the strength of the following quotation should be made more explicit, and maybe a little less technical (depending on who the target audience ultimately is):

“…a somewhat narrower audience will also appreciate that a major improvement in search engine performance occurred when they started taking into account link structures and then click behaviors.”

The point: CS theory, algorithms, and practice (first brought forth by Google) made the internet VASTLY more useful than it otherwise was. Before this technology, the internet was like a library without a card catalog, only the “library” was thousands of times bigger and growing exponentially faster than any physical library could.

I also think this affects a much larger audience than you’re giving it credit for. Most people’s first task when using the internet, aside from email, is search. Search is the gateway that lets you find everything else you want to do online.

In fact, search is so much more useful than other collaborative filtering systems that I think it might deserve to have a game-changing advance all to itself. Amazon recommendations don’t drastically change what many people do everyday; good internet search does.