PriceGrabber – Product Comparison Portal Developed in PHP MySql Comparison Portals can be developed in several ways. There are various comparison portals available in the market. One of the most popular comparison platform is PriceGrabber. They also provide XML feed, Product API, CSV feeds for affiliates to promote products and earn commission. For the affiliate marketer, who wants to create exclusive online comparison portal, can use either API or XML or CSV feed. There is difference among the feeds management. Let me explain in more details: CSV feeds – You can down load the product feeds from the feed provider …