For me the search function here only seems to look at the current part of the threads, not the pages and pages prior or after (which can be scrolled into view, but might as well not exist when they’re not current). If it searched the whole thread, we could search for the people we befriended months ago and re-connect. Perhaps there are performance or security issues that make full-searches not feasible… I don’t know.
But since this site can’t find 'em, and PoGo won’t even pretend to try, it’s kind of the antithesis of social networking.
Later thought: Not everybody uses the same name here as they do in the game, so searching here has some intrinsic limits.