The Virtual Chase website has a "database of sources" that provides, among other things, a nice overview of internet resources for researching companies and people. From the Virtual Chase blurb:
"Ballard announces the completion of the Database of Sources on The Virtual Chase. Released in beta during April of this year, the database contains abstracts and links to Web-based sources of information for conducting research on companies or people and for finding legal or factual information. You may browse the database by subject or search it by keyword."