Mixed feelings.
I've been, for a long time now, been thinking I really should register myself on the Wiki to add my two-pennorth on the some of the Talk pages, and moreover make some enquiries about whether some Original Research should be carried out[1][2].
The thing is, I'm not online, where I usually play DF, so I tend to target the Wiki with those little queries that I've accumulated, (and remembered) once I get into an online situation, so actually prepping edits up seems to be superfluous, at the moment. Yet I could see myself doing as I do now with the forums, contributing 'real-time' in such discussions.
On the other hand, signal-to-noise might be a concern, and how much "This is being discussed on the wiki page foo:talk already!" would occur. I don't want to flood (or have flooded, by others, even if I keep myself at bay) the forum with more traffic just because another lane has been added to the metaphorical carriageway.
[1] I've been personally rationalising the Embarkation skills list with the skills commonly gainable/available by use (or brung in by immigrants), e.g. Knife User isn't (to memory) embarkable, but is common with immigrants and may develop of its own accord in dwarf with a given military configuration. Part of this rationalising concerns the order the embark list displays and the (now, i.e. since 0.31.* came about) strict ordering of skills under the general tab. Anyway, for all I know there's already a complete breakdown on this on the Wiki, and/or mention on the forums. This might be something I'd pose on the DF Wiki subforum, maybe.
[2] In a similar project, that I started and completed last night, there's the ordering of items on the stone sublist of the stocks screen vs the ordering of stones in the Stone Use/Not Use administration screen (which I noted doesn't mention Obsidian!) and the stockpile stone list. This was done because I was reorganising my "Masonic Quarter" and wanted to make sure I was making one pile per stone-type[3], for a given subset. Would that be a useful additional piece of information (if not already there) on the Wiki? That's something I might ask on the DF Wiki subforum.
[3] Which reminds me, I don't suppose there's a Dwarf Therapist-like variant for Stockpile management? Similar philosophy of basic situational awareness of each entity (i.e. stockpile), more user-friendly one-glance rendering of said information and perhaps a quick edit-and-write-back facility for what stock each extant entity takes... I don't use DT as much as I might, but I think that has about the right level of Not Cheating vs easier interface, and it would be nice to see replicated.