wackybrit's Journal: Journal Post Numbers

I've just noticed the numbers running alongside the journal entries. They're not sequential, so I'm assuming they're a global 'journal entry' number. But if that's true, how comes they hardly go up? For two posts that are 12 hours apart, the number went up by 7. Does this mean only 7 other people posted to their journal in this time? If so, that's kinda crap ;-) Doesn't anyone use these things?