As it should: Spam, personal attacks, and what have you can and are communicated over PM and this should also not be considered appropriate.

Now before some self appointed forum lawyer starts spouting off about private communications and what not, please understand this: Moderators usually do not have access to others PM's and an administrator will not grant that access unless a member specifically requests them to because they are receiving SPAM, or BS via PM.

A bunch of neo nazi, pro life, bible thumpin'. Pygmy Eskimo members can have all the private conversations they want between themselves. Their plans to rule the world and impromptu circle jerks can go on undisturbed unless someone reports them. Someone else can not report them unless they received an unwanted PM inviting them to participate or attacking them for not.

@ Flandry:

At this time... this is a good thing.

It is a shame that our previous self control is no longer effective and this task must now be undertaken.
Sadly, at this time I believe it is unavoidable.