Does anybody have experience with price comparison  web sites such as: Kelkoo, PriceRunner, Shopping.com, etc?

I have recently registered my site with Shopping.com in order to get some exposure and of course sales.  The market i am (memory cards) in costs approx 30p per click which can pretty much eat up the profits very quickly!

Does anybody have an opinion on which one is better to use or any other marketing tips to get your site exposure and the all important search engine rankings!!! 


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