Big Brother is an easy to use tool for fast and efficient site hyperlink checks. This Macintosh shareware (cost of $10) was developed by Franois Pottier, a theoretical computer science student at Projet Cristal, INRIA (The French National Institute for Research in Computer Science and Control). All that Big Brother requires is a URL and it takes care of the rest. The output includes a detailed summary of the links including the name, URL, source, and the diagnosis. Big Brother can also be configured for quick opening of sites and/or scripted to automate checking.