Hi,
I currently work part time and have recently being using the internet to see f I could earn some extra cash. I have come across a useful site called moneysavingexpert.com where you can register and get sent useful emails about discounts, saving accounts etc..
I have also signed up with YouGov (a survey site) where you get paid money for doing online surveys (about 50p to £1.00 per survey). When you have made £50 you get sent a cheque. If you refer people to the site you also get their equivalent survey money. My referer link is below.
www.yougov.com/users/registrationintro_ref.asp?refid=461476&jID=3&sID=1