Most journalists do their correspondence with an interesting messager off the newsgroup, through e-mail. It will give you a listing of the number of messages they have posted in various forums. Click on the forum name to see the messages. Just seeing the listing of the forums they are involved in can be an interesting insight. It is the gateway into a vast and varied resource for journalists.
Results are in chronological order.
Remember this is not finding messages but newsgroup names. Over 270,000 web forum discussions located on individual websites. Do a search and get a listing of forum areas discussing that topic. Many forum areas require registration on the site sponsoring that discussion, so it might be a couple of steps to get to the messages themselves. After another traffic death involving air bags, you are going to do a story covering the issue of use of air bags.