etequette reminders?

[Usually Lurkin]

is it possible to implement some kind of etiquette reminders?

maybe a line from the faq can appear in the gray box whenever you are posting a reply.
or the occassionaly "just because you can post does not mean you should" can scroll across the screen.

That could help cut down on the childish bickering, name calling, and useless posts that sometimes appear.