I'm interested in a pretty wide variety of subjects, which is why I've always found Wikipedia a very worthwhile project. And unlike when I view other websites and see glaring mistakes and can do no more than email the webmaster and hope they eventually fix those, here I can log in and fix them myself, which I definitely find valuable.
Lately, I've been adding lacrosse content. I'm starting slowly as I figure out various formats and ways of tagging things, but I'm hoping to keep ramping up to more ambitious contributions. If someone doesn't beat me to it (and I'm not discouraging that), I'll probably try to create a Women's college lacrosse section, because it seems a glaring omission right now. But to do it right it's going to take a lot of time.
Feel free to contact me about that or related issues.