It has been shortly discussed in the newsgroup renaming thread: For some groups, it is desireable to have readers read the FAQ first before posting. There are several approaches, and bug 65451 has been filed. My suggestion is the following: If a reader posts for the first time, the msg doesn't get through until he answers to the software with a keyword (similar to the mailing-list subscription confirmation). The post bounces with a hint to the FAQ URL. The keyword and its existance is mentioned only in the FAQ. Once the poster sent the keyword, that From address is free to post (and the first post is automatically posted). It could be implemented via a moderated newsgroup, just that the moderator is software. Who could implement it? I think, such a software would be gernally useful and is not limited to any special server. Maybe, there are even existing implementations?
