Anyone needing to find/track newsgroup posts might want to go to www.nnseek.com, which just launched in what the company terms as a beta. Searching was fast, with the search results displayed, as well as a list of newsgroups that included your search terms.
I'd like to see them include the ability to setup RSS or XML feeds for search results; this would provide a valuable service to anyone needing to do media monitoring ... without some of these advanced features, there really isn't much to differentiate them with Google's newsgroup search.