Lately I've gotten in the habit of leaving things that amuse me in my Gchat status, mostly depressing little jokes all about my failing at laundry and grading and friendship.
This'll mostly be an archive for those statuses, with not much more original content, although it might end up also serving as a repository for longform things like song parodies and the like.
Dear my students, I am good at replying to class-related emails and bad at replying to class-related chats; please construct your Brian-contacting strategies accordingly.