Looks like Home Draught are giving away a 10 pint keg to anyone who creates an account with them and creates an event and gets 5 others to join. Its genuine by the look if it, I know I'm a new user but it's a valid website.
All you need to do is sign up and create an event... Then get 5 others to join, then you get a free Keg to pick up from Morrisons :)
Limited to 5000 only!!!http://www.homedraught.com/event/