I'm currently writing the tag wiki for the personal-software-process, and it would be real nice to have a set of guidelines, tips, pointers, or some kind of guidance for how to best write one.
Uh, it just so happens that I have some tips for you:
So that's how I got so many points on Meta.
General rule is to cover the basics:
I'd break "What" into two levels - first thing someone should read is the introductory/high level summary of what the tag represents. Details can wait for later on, for more interested people. Assuming, there's enough content...
Keep the content brief, because the current layout will push down the synonyms. Maybe two column approach would be an idea?
I think there should be citations, like what you see on Wikipedia.