osCommerce contribution which would help you export easy your products into shopping.com - one of the best Pay-Per-Click service.

The Shopping.com network includes 80 percent of the worlds top 300 retailers and represents more than 10,000 merchants. The service provides users with great depth in product recommendations, including more than 1 million consumer reviews with price information on 5 million products from 3,000 retailers. Shopping.com is particularly good in handling some of the softer categories like home and garden. Every successful store "must use".

Main features:
easy to use and configure
multilanguage support
multicurrency support
ability to export only selected categories
ability to include/exclude products marked "out of stock"
ability to include/exclude products with zero quantity
capability to include/exclude products with zero price
capability to strip HTML from Product Names
capability to strip HTML from Product Descriptions
capability to set default shipping cost
ability to limit number of products exported
ability to set currency that is used during export
ability to customize name of the export file
inline text recommendations for fast initial configuration
ability to automatically upload feed via FTP
ability to send feed via email
third party sales channel tracking (Google Analytics, WebTrends, OneStat, 123LogAnalyzer, Netmining etc)
optional GZIP compression of feed contents
additional Live Product Feed URL options
ability to validate feeds (XML-based feeds only)
ability to store feed on your server
multiple export configurations
preconfigured Google Analytics support
supports most of standard-compliant SEO-friendly URL modules/addons
Click Tracking / ROI Tracking
online documentation and Quick Start instructions
and more