One of the problems here is that every week, someone creates a new Wiki, or Excel of HNers, or archive of posts, and a week later no one remembers it. What's going to stop the wiki from being forgotten?

I'm trying to fix this "Meta" problem with a webapp I created, which is basically a (votable) list of resources for HN or any other site. You can find it here: http://resourcey.com/site_details/2/news.ycombinator.com/. It's helping me solve this issue for myself, so at least I'm scratching my own itch :)