One of the best things about paid inclusion is that you can batch-submit URLs to the search engines via an XML file. XML allows you to create a customized file that more easily enables the definition, transmission, validation and interpretation of data between your site and the search engine.
If you’ve got a massive catalog with thousands of products and unique URLs for each product, paid placement would be a laborious and very expensive task. With paid inclusion, you can create an XML file of your pages. This can be a spreadsheet converted to XML, which would be populated with information such as product names, descriptions, keywords and body copy for each URL you’re submitting. This offers you significantly more control than search engine optimization (SEO) regarding how searchers find your pages and what they see in the search engines. The specifications for the XML file will be provided by the search engines and may differ from engine to engine.