@dinosoep
Easy lesson learnt the hard way.
rainzhang, whoever he was, logged it sometime goodness knows when and checked the 'remember me' check box. It's so
'handy'. So he doesn't have to log in any more and neither does his kid sister or a the nasty script that ran when she clicked on some interesting looking web-link promising handbags, anti-spot and anti-ageing cream and boys a-go-go. If you don't run NoScript then nasty scripts get to run before you find out where the link has taken you. If you are a web type (I'm not), it's a piece a cake to write a java script (or XUL script) to run through your history looking for all url's with the word forum in them (for example) and add a post to each one.