Using an internal process, PROWL reviews organic and paid search results from search engines like Google and Bing—usually the largest sources of traffic for online retailers; third-party marketplaces like Amazon, AliExpress, Newegg, and Rakuten, which allow retailers to sell on their websites; and comparison shopping engines like Google Shopping, Nextag, Pricegrabber, and on which consumers can compare prices from multiple websites.

In addition, we are able to link multiple websites and third-party marketplace sellers to a single parent company. We do it by cross-referencing collected contact information and identifying all accounts owned by the same company, so that if and when you need to take action, you know exactly whom to contact.