What I was doing before I started YC: writing and programming.
Yes, I'll be working on Arc again. (I've been working in Arc regularly, since HN is written in it, but I haven't been able to spend much time thinking about the core language for the last 5 years or so.)
> I'll still be around as a user, but less frequently than when I felt I had to check the site every hour or so to make sure nothing had broken.