I propose that all academics with research specialties, no matter how arcane (and nothing is too obscure for Wikipedia), enroll as identifiable editors of Wikipedia. We then watch over a few wikipages of our choosing, adding to them when appropriate, stepping in to resolve disputes when we know something useful. We can add new articles on topics which should be covered, and argue that others should be removed or combined. This is not to displace anonymous editors, many of whom possess vast amounts of valuable information and innovative ideas, but to add our authority and hard-won knowledge to this growing universal library.
By the way, what are you thinking of the quality of mathematics entries in Wikipedia?