Abstract: A computer-implemented method for analyzing a plurality of websites identified by a web crawler or software agent is described, by analyzing how particular websites have been built and structured to identify target ecommerce websites with an online store that have been built using a customized or bespoke programming platform. Based on an analysis of a uniform resource locator and associated header data, cookie data, Javascript files, stylesheets and images identifying a particular website and any descriptor data not including website content, by loading anyone or more of routing protocol headers, cookies, files and images associated with the website identifiers into memory, evidence of the existence of ecommerce functionality associated with an online store may be found. In a first pass, it is determined whether online store ecommerce functionality is likely to be supported by the website based on said analysis, or if the website is to be excluded from further analysis.