I've only skimmed through the articles so far and they seem really interesting. And your comment ought to be the topmost comment :-) but people won't have time to read the three articles and upvote :-(

Anyway I updated the article I wrote with a section "This problem elsewhere, and solved?" that lists your links (and said thank you to you).

May I ask, how come you knew about how search engines function? (For example, do you work with developing search engines or have you studied them at University?)