I posted regarding this on the MOUL forums (in favour, of course

) but another minor suggestion was made, that the /shun effect not only makes the offending avvie invisible, but also that the avvie dong the shunning beomces invisible to the shun-ee.
I don't know if this would make more or less work for whomever is doing the coding (be that Hoikas or someone else), but it would literally stop the annoyingness in its tracks... because not only would the victims be freed of the harrassment, the perpetrators would be denied of their victim as well, addressing the concern that you indicated, Lontahv.
While it /is/ all psycho-terror, as you state, Gahlen, if I am being harassed and shun someone but know that they could still be following me around and that others who have not shunned him/her can still see him/her.... well... it would give me the feeling of a "peeping tom" so to speak. As in, I don't know they're there, but I know they're still watching :/
Anyway, just my two cents.