I believe in newsgroups. Sending private e-mail, to my mind, defeats the purpose of the newsgroups. First, it's of less benefit to you, since now you're tied to me having to check my e-mail, find time to reply, etc., whereas if you post to the newsgroup, someone else may be able to answer your question instead of me. As well, if you have a particular problem, odds are someone else out there has the same problem, and they won't benefit from private e-mails. Remember, too, that everything posted to the newsgroups gets archived at services such as http://groups.google.com/advanced_group_search,
so others can benefit for a long time (and perhaps I won't have to answer the question again <g>).
Unfortunately, Microsoft has chosen to leave the realm of newsgroups behind, replacing them with online forums.