I suspect it's a sort of burnout, caused by far too much excitement this past couple of months.
Anyhoo, I've decided the best cure is to give myself a weekend off. I'll be reading my flists, but not making any new blog posts until Monday (when I'll be a guest on Jim Hines's blog).
If we don't see each other on someone else's comment thread before that, I'll see you then.
ETA: Thank you very much for all your kind comments. They're much appreciated.