Two things are needed like... yesterday.
1) A right-click option to report a player for spamming. It takes too much work to report someone now, and most people don't bother. I would love an auto-silence (stop whispers from a player) after some high threshold of unique reports against a player (50? Something that would be difficult for a group of people to manipulate to hurt real players, but easy enough for a gil spammer to get if we had a quick way to send reports).
2) Allow friends and FC members to by-pass the tell filter put in place by /busy. I'd use busy, if I wasn't worried that my friends or FC members might try to send a tell and not be able to get through.
I know battling spammers is a long road, but I think it's ridiculous that our current options are to go through a complicated report process or to ignore all tells to avoid the nuisance. They have gotten alot worse lately, and I just want to play without being harassed every day.