If you want to read about the IssueCrawler that was suggested earlier, a webtool I have used a lot and highly recommend, go to www.govcom.org There is also a strong heterogeneous data visualization software called "ReseauLu" from www.aguidel.com that can be used for hyperlinkage analysis or other relational mapping and database visualization processes. And I have recently checked out some hyperlinkage maps made with UCI Net a free software available for download at http://www.analytictech.com/downloaduc6.htm Cheers, Zach -- Zachary Devereaux PhD Student Rogers / OGS Doctoral Fellow Researcher / Lab Coordinator, Infoscape Research Lab: www.infoscapelab.ca Communication and Culture Program Ryerson and York Universities, Toronto Mobile: 647-299-5714