Pro Data Doctor optimized website promotional link exchange web directory source code has been developed according to search engine optimization SEO requirements and is highly search engine friendly. ASP script helps to instantly index your links on others site and improves your page rank on search engine. Script provides submission of links on internet directory and applies automated verification process on back links page without any manual efforts. Code automatically manages real time reciprocal link exchange and enhances your page back links popularity. Source code package supports to improve your online visibility with free internet advertising through link indexing and trade links. Swapping links with others website is very effective way to promote your website and advertise your products on search engine. Web directory offers easy to add, edit and delete categories and sub-categories from your secure area. Directory has its own website spider for checking your submitted links. Web directory supports webmasters, site owners and marketing organizations to increase their page back links popularity on search engine through site submission. Features: * Website reciprocal link exchange source code is very search engine friendly. * Code automatically performs verification process on submitted back links. * Internet directory uses data base to store all the details of submitted links. * Easily customizable ASP script source code helps to instantly index your links on others website. * Automated web directory organize and manage your submitted back links. * Supports to add unlimited categories and sub-categories in web directory. * Web directory has its own website spider for examining your submitted links. * Script stores unlimited submitted back links that improves your page rank on search engine.