If a newsgroup has a FAQ or several FAQs, these will be posted to the group on a regular, often a monthly or bimonthly, basis. Every article to Usenet includes a place for the author to write a brief subject line. Two items are important here. First, always write something in the subject line. Second, the subject line should be as descriptive and informative as possible.
Readers choose to read messages based on the subject line.
A generic subject line will get little attention when there are hundreds of messages to choose from. By the time your followup article is read, the original article may have been deleted or may simply never have been read. Occasionally, the original message may reach some computers sites after the followup. Thus, it is never safe to assume that your readers will know what you are talking about unless you include quotes from the original article. However, include only the portions of the original message to which you are responding.