Following a newsgroup's proper format adds creditability to the message you post or send. Breaks in the format or conduct might get you ignored or your post automatically deleted. Maybe the Newsgroup follows strict rules that discussion or text only messages take place in another group. Or that all response are to have keywords in them like OT (Off Topic), REF (Raymond E Feist), and TD (Topic Discussion). Then request to participate you must use a Kill Filter that deletes all messages that don't have any of the three indicators. Of course they state this to eliminate random spam and viruses that are sent to the newsgroup through bots (an automatic program that sends a message to a location in it's address book). So reading each newsgroup's FAQ will help prepare you for dealing with that groups regular readers.
FAQ answers attributed to Raymond E. Feist are copyright by Raymond E. Feist.
It should also be born in mind that the answer given was only applicable on the date written, and to a specific question. You may find further, similar questions, in the FAQ.