From the point of view of a web developer, there are few things as easy to build than a price comparison website. All you need to do is get a list of products, then group the ones that are the same together, and then order them by price, cheapest first.

If you have an affiliate programme in place with all the shops that you compare prices for, you get paid for every referral sale that you make, and if everything goes well, you make a decent amount of money for a while, then one of the big boys comes along, buys you our, and you go off to live in a better neighbourhood and potter around with more projects for a few years until you hit it big again.

The thing is, there are now so many price comparison websites around that you never know which one to use. From huge sites like Kelkoo, which offer literally millions of different products through to very specialist niche comparators which specialise in offering some unique products, there are even comparison sites that allow you to compare different price aggregators to find out which one is most accurate.

Do you know what the best price comparison website is? Google. The only problem with Google Product Search though is that there are not enough people signing up for it. The elegance of the interface, and the ease with which you can add your products, coupled with the fact that from a retailer’s point of view, you don’t have to pay a commission to Google for advertising your products, means that everyone is a winner.

The only thing that the big G is missing is associating reviews with the product, but with their access to the majority of information on the internet, the chances are that it won’t be long before they add huge streams of information to the site, or provide the product feed as an API that other webmasters can use to populate their sites with and provide the information to Google Users by integrating all the info from Froogle with a number of other RSS feeds for every single product review site.