A limited exception is provided to general purpose internet search engines and non-commercial public archives that use such tools to gather information for the sole purpose of displaying hyperlinks to the Service, provided they each do so from a stable IP address or range of IP addresses using an easily identifiable Admin and comply with our robots.txt file. “General purpose internet search engine” does not include a website or search engine or other service that specializes in classified listings or in any subset of classifieds listings such as jobs, housing, for sale, services, or personals, or which is in the business of providing classified ad listing services.