I'm an Ottawa-based casual contributor to Wikipedia primarily in the areas of sports -- I update a lot of tennis rankings in each player's infoboxes -- and pages of local interest. My pet-peeves are pages with excessive unimportant details, irrelevant information and pages on which every sentence begins with "On such-and-such a date, xxx happened."
I also seem to find myself updating verb tenses frequently.
Useful Wikipedia Links
- http://en.wikichecker.com/ -- Wikipedia user statistics
- http://tools.wmflabs.org/supercount/index.php?user=Sxg169&project=en.wikipedia.org&toplimit=50 -- other Wikipedia user statistics