It seems there's a vast difference between how people treat their userpages. I've seen two obvious trends. There's the type of people that treat it as a blog. Post something that happens in their day and leave it there forever. This typically builds up and you're left with atleast 100+ news posts.
The other type is those who treat it as a news bulletin. Something that only needs to be posted every so often to portray a piece of information, maybe a long post about something that doesn't belong on forums, but needs to be published somewhere, e.g. a story.
I'm the type of person that likes to have no more than 5 posts at once. They usually contain a story I've wrote, or something important that's happened to me. Maybe just something that can't be posted in General because it breaks a rule of some-sort.
How do you treat your userpage?