We've got a Wiki where I work and it's a blessing and a curse. Keeping things up to date is one of the more frustrating things due to change happening so frequently.
One suggestion would be to incorporate it more with the articles and reviews here.
When a review is posted, I like the idea of being able to click a link to a wiki describing that product. Usually I'll end up searching for that item, finding it at several retail outlets... within a few minutes I've got so many tabs open my browser is on the verge of crashing.
I'm not complaining, but the search on the site doesn't often yield the results I'm looking for.
If I need info on bear bagging techniques, I get 20,000+ hits from the forums and over 230 articles. It would be really cool if I could look up bear bagging on the wiki, have a list of related articles, suggested techniques for different regions and some products available.
In a way it would incorporate more products and techniques with the wiki. I like the separation of items in the shop: Packing, Clothing, Shelter, Sleeping... and so on.
Corresponding information in a wiki would be handy. Maybe I'm describing more of an information hub. But, that's my 2 cents!