The monthly "Worthwhile Web" column on the OSIS net is always a reliable source of interesting web discoveries; this month I was delighted to find out about www.linkhounds.com . There are two tools here of particular interest; Link Harvester is a sophisticated tool for analyzing links to a particular domain or web page. Hub-finder identifies sites that have co-occurring link to sites on a particular topic. This can be very useful, and draws on the same logic that citation indexes used to identify relevant resources in the pre-online days. Let us say say you are looking for good sites on defense/security information. You submit up to 10 of your favorite security info sites to Hub Finder, and it will find additional sites that are linked to from at least two of the sites you entered. For example, I entered www.fas.org, www.cdi.org, and www.globalsecurity.org. Hub-finder then found 22 other sites with at least two matching backlinks, including several interesting sites that I'd not been aware of.