If somebody else uses the computer and came to the AB webpage they'd be able to post as your username, not really an issue on most peoples home computer but certainly a problem if someone was accessing AB from a public location.
I've left myself logged in at a friends house that used to be an ABer before and they mistakenly answered a couple of questions as me before realising, fortunately they also work in IT so they looked like the sort of answers I'd give anyhow.



