Move over Google Groups. A company called Mark Logic are using the Mozilla newsgroups/mailing lists (and those of other projects such as Apache and PHP) in order to show off their (like Google Groups, proprietary) product which indexes and allows for structured searching of email and other information. And I must say, it’s very nice. Searches produce sane results, and I particularly like the Ajax-y message reading UI which slides sideways in an iPoddy way as you drill down to individual messages. My only complaint is that the “thread pane” above the message pane isn’t actually threaded.
There are cute touches too. If you want an email address, you have to type in the text of a double captcha, and the form has two buttons: “Submit” and “Beats Me”. :-)