Reckon your anger-venting Facebook update about your annoying boss is safe from prying eyes? Certain your ROFLing update about how mullered you got at that club last night will only be seen by your mates (and a couple of random aunts)? Well, think again…

Created by IT boffin Callum Haywood as an "experiment", the We Know What You're Doing website scours non-private Facebook accounts for potentially embarassing status updates, then re-posts them under one of four self-explanatory categories: Who wants to get fired?; Who's hungover?; Who's taking drugs?; and the thankfully censored Who's got a new phone number?

Basically, if your Facebook privacy levels aren't set to super-off-limits-leave-me-alone, it's probably best if you don't do a status update along the lines of "My boss is such a dick lol I'm doing gak off his desk rite now while hes in teh toillet lmao."