a) this macro has been posted a few times now
b) it really really shouldn't be needed. se could simply give us the option to right-click blacklist AND REPORT (lotro does this, for example)
c) one major issue with the blacklisting is that the chat automatically scrolls down more often than not. there needs to be an easy function to stop that (for example like most mmos handle it. as soon as you scroll up the chat realises that you probably still want to read something)

thank you, anyway. this will come in handy for people while we wait for SE to actually help us out here