My theory is that such code was just never implemented in the shiny new web.
vBulletin which is very popular has "ignore" mechanism: put a user on ignore and you don't see his posts. Yep, it's just as easy as pressing a button.
I like ignore buttons. Cleans out the crap very quickly. And provides useful feedback to people joining lists who want to talk to people. As grown up after grown up plonks you, those who might get the message do.
Below is a message I just got from jackk. Some specifics have been redacted 1) so that we can discuss general policy rather than the details of this specific case 2) because presumption of innocence, just in case there happens to be an innocuous explanation to this.
So... thoughts? I have mod powers, but when I was granted them I was basically just told to use them to fight spam; there was never any discussion of any other policy, and I don't feel like I have the authority to decide on the suitable course of action without consulting the rest of the community.