Once again, the monastery's been visited by trolls. While this has happened before ( see here and here, they seem to be more persistent and tricky. In order to help keep the monastery a friendly and stable place (productive's another issue ;) ) I'd encourage everone to read the above links. I'd also like to add the following ideas :

A list of people a user has /ignored should show up either on my home node, or in user preference, with the option to unignore them. I suggest the homenode in advance of user preferences because while a user may visit his homenode several times a day, the preferences might only be edited once while he's here.

Secondly, another addition to a home node : the total number of people ignoring you, publicly available, just like XP or nodes authored. However this is not a suggestion to list those people out, just an anonymous number.

I agree with previous discussion on a /ban command -- it would unite trolls in a false-logic argument of "freedom of speech" and make them work harder to overthrow the monastery. Such an implementation would be a sign of grave health for the site, I think.