A friend of mine found a very good website a while back for saving you money when buying goods either online or in store. The website is HotUKDeals. The website is updated by the public who find the best deal they can find. Members of the site can then vote on whether or not they think it's a good deal. The best deals are voted hot and they can be searched in this way.
Another cool feature of the site is discount codes. The site has a voucher finder where you can look for discount codes for most retailers to use on their online shops. For example, there's even codes for everyday retailers. I used a voucher the other day for my Tesco grocery shopping and got £5 off for spending over £50.
I have a news feed of the hottest deals on my Google homepage as I like a good bargain. The downside is, you get to see the best deals as they get voted for throughout the day and it makes you want to buy more.
Take a look at the site next time you want to buy something or even if you don't because you might just find a bargain.
Almost forgot ... don't forget to tell your friends too!