[Antiquarian]

When you use intemperate language to tell Bob to leave you alone, you are not in an anonymous context.

In an anonymous context, there is no you and no Bob, just alternating post-sources. The same person may be both you and Bob, putting on a Punch and Judy show.

[wpietri]

This is true, but I'm not sure how it's relevant. Alternating post-sources can still be mean about third parties.

[Antiquarian]

From anonymity, it follows that A and B cannot raise their own statuses by being mean to a 3rd party.

From ephemerality, it follows that anything mean A and B post cannot long endure. Were C & D to post something mean about a 3rd party in the same thread, it would push the mean postings of A & B into /dev/null. Were E & F to post something mean about a 4th party in a new thread, it would push the entire thread about the 3rd party into /dev/null.