I think I've said this before - we should use the reporting mechanism in Mechanics to nominate the best explanations of stuff to be immortalised in a sticky.
Replies could be for formatting improvements, adding pics and so on. Mods could just replace the OP now and then with the latest version, right? I'm sure you guys can edit any post... otherwise I guess the OP would need to be posted by a sybil account.
Come on, we could have our own wiki guide, and then beautiful explanations like this won't be lost in the depths.