An article which deals with etiquette of internet usage has some useful suggestions about how to post messages. The article is-

Don't be vague, check before you send and NEVER start with 'hey': Etiquette expert William Hanson explains why you are writing emails all wrong

http://www.dailymail.co.uk/femail/article-3115242/Don-t-vague-check-send-NEV...

Perhaps these suggestions could be included in the "Rules" for posting messages in the openSUSE's mail lists?

BC