Gently correct typos and spelling errors.
Do not expect others to do the editing for you.
Keep smiling, if peers wipe out your stuff.
Avoid addressing contributors directly, unless complimenting.
From time to time, compliment.
Participate in the discourse in a constructive, respectful, conciliatory fashion
Be friendly, but do not expect others to be friendly to you.
See also: Wiki Social Norms
There was such a lovely story here. Now it is gone. Please put it back. -- someone
It was me. I goofed on this one by not saving a backup. I may have goofed before that by doing the edit in the first place. -- Wayne Conrad
See original on c2.com 