There is nothing more annoying than people who insist on standing up and talking loudly on their mobile phones in the middle of an open plan office (just one more reason why open plan offices suck arse). At least in the past it was just a few ignorant tossers who did this, but now with Skype a whole bunch of otherwise considerate people seem to think it’s fine to yammer away at high volume while sat at their PCs. Bastards.