My comments on the following:

>1. It has a useful subject.
>2. You have attempted to resolve the problem yourself.
>3. You have searched the message archive for a similar problem.
>4. You have searched the web for a similar problem.
>5. You spell checked your message.
>6. It is good practice to include System Information where relevant.
>7. It is good practice to show unsuccessful attempts at resolution.

Obviously, the above applies if you are asking for help. For general 
comments about Mac products or requests for comments, I think the 
standards can be a bit looser.

>When responding to a message, ensure that:
>1. You quote appropriate parts of the message.
>2. You attribute the quotes correctly.
>3. You put your response *below* the quoted part.
Sorry, I agree to disagree on this one. I will always put my response 
above the quoted part unless I am responding to a particular part of the 
message, as I am here. This is an issue of personal preference.
>4. You only respond to the list - unless specifically asked otherwise.
I prefer to respond to the individual off list for brief comments or to 
agree with a comment they have made or to thank them for their help. I 
believe that one should respond to the list when one feels others may 
benefit from their comments.
>5. Your response will be helpful to a future user who searches the 
archive.
>6. If you don't *know*, then say that you're guessing.
>7. If you're not sure, then say that you think so.
>8. If your response is really a new post, adjust the Subject accordingly.
I really agree with 6, 7 & 8.

Also, I do want to say that although I know the experts on the list may 
feel like they are always being asked or somehow they may feel obligated 
to answer a question that they are knowledgeable about, I don't feel that 
is the case. I think that the beauty of this list is that everyone can 
help each other. So if you, like Onno, are a guru who may not want to 
answer a question for the millionth time on this list, just don't. Someone 
else will. Or maybe they won't. 

Personally, I think that, in most cases, the contributions to this list 
aren't superfluous. I enjoy the discussion and dialogue, not just the help 
tips.

Regards,
Nathalie