Several of my avid commenters have (legitimately) requested that I post somemath stuff that's actually "interesting". All you non-math-y people may not really believe this (considering the hype around the recent events), but .999...=1 is actually not all that interesting mathematically. It's a simple sum of a geometric series, really.
So as a start, I listed some of my other math posts in the sidebar. The top two are my most-hit posts, and the pi question is still open, although it's been a long time since I thought about it in any detail.
I hope this provides some fun for the math people until I think of something else to post (like the proof of the coolest fact ever).