By letting merchants use RSS to distribute updates on products, Offertrax aims to bring visitors back for future conversions. How it works? The web-based application creates RSS feeds for entire online catalogues. Retailers just add a ‘track this’ button to each product page….Consumers can then subscribe to a product’s feed. As soon as a product’s price changes or a retailer announces a special offer, trackers are notified. Merchants can also send notes and deal alerts directly to trackers.