I am Wizardman, a Wikipedia administrator, former Arbitration Committee member, and prolific editor. AMA
A bit of backstory to help with any questions. I have edited Wikipedia since 2006 and been an admin since 2007. I served on the Arbitration Committee from 2009 to 2010. My edits include nine featured articles, many of which have been on the front page. I have over 200,000 edits to my name.
Since I have held pretty much every volunteer position one can hold, I have an extensive knowledge of Wikipedia from all sides, so any questions I should have little trouble answering.
Update 5:00 EST - I was not expecting so many questions, alas I'm done for the day. I responded to as many as I could, thanks to all!