From a user’s perspective, hypertext links on the web form a directed graph between distinct information sources. We investigate the effects of discovering “backlinks ” from web resources, namely links pointing to the resource. We describe tools for backlink navigation on both the client and server side, using an applet for the client and a module for the Apache web server. We also discuss possible extensions to the HTTP protocol to facilitate the collection and navigation of backlink information in the world wide web. 1