I read voraciously, and I like to write about that which I ponder, with out the deeper consideration a polished piece. It is also a place I use for storage of thoughts and ideas, interesting articles, things of note.
I keep a similar collection in notebooks in my studio, but their physical existence makes them more difficult to access.
Lately, when I have time to keep up, I write about sociolinguistics, artificial intelligence, the mind, and robots. I never lack for time to read, but the writing has been a bit slower this year.