I dunno about this. I'm in no way a McDonald's fan but it says there's DDT in the burgers. Whilst US McDonald's does buy beef from Mexico and the spraying of DDT on grain crops used for animal feed isn't banned in Mexico, it's a long step to claim there's DDT in Mucky D's burgers. Unless someone can point to an analytical study that found some.......
This probably wouldn't work in the UK, they'd send it but then hold it at the end sorting office until the recipient collected it and paid the missing postage. This happens as standard if a letter is sent with too little postage on it.
http://youtube.com/watch?v=CLmE4lby_fI
http://www.guardian.co.uk/science/story/0,,2022042,00.html