We appear to be in the midst of discussing tags and the issues surrounding them, so it seems an apposite time to bring up the tag wikis.
Coming from MO, this is new to me (actually, MO may well have them - I don't know!), so I don't know what the procedure is. According to the stock message, I have enough rep to edit them but there's another condition regarding being in the "top 20" on that tag. I would consider it a reasonable "support task" to get some of these filled out a little. So:
First question: is there an easy way to find out which tags I fulfil the necessary conditions so that I can edit the wiki?
In the expectation that not many can edit that wiki as yet, but that there are many people who would be able to do so, I would also suggest that we use the answers to this discussion (with the exception of any answer to the question above) as preliminary wikis. That is, we can shape "tag wikis" for the common tags in CW answers here, and then those with The Power can copy them over at their convenience.
Second question: Compose a suitable "tag wiki" for your favourite tag.
(I realise that I shouldn't ask two questions in one place, but I'm guessing that there'll only be one answer to the first one and only the Men In Cyan will be able to answer it.)