I joined Wikipedia in 2005, although only really started editing seriously in 2006. Most of the time I tend to observe articles I've written or watchlisted, and occassionally improve existing articles if I come across a glaring problem, and go through phases of writing new articles when I spot a gap which hasn't been filled. Sometimes I'm genuinely surprised at what articles haven't been written yet, for example I only started The Forsyte Saga (1967 series) in 2009.