I enjoy seeing what people are up to when they aren't training. People whose logs have just plain training entries just aren't as interesting.
Hmmm. I generally only put down training. Of course, there's my alter ego
My AP log doubles as my diary. I've referred to it countless times for various reasons, and it's been helpful (and kind of interesting). I kept a regular written diary for years in my school years but of course this is much easier to do and to access.
I agree logs w/ stuff that isn't just training are much more interesting to read, in general.
I stopped putting very much other stuff in my log, since it's apparent that no one reads it anyway. If I do have something else to report, I tend to put it on Facebook, where a wider sampling of my friends will see it.