With the new phasing system you pretty much have to be grouped for you to see people, even in big busy cities like Stormwind it should appear mostly empty as its split into 3+ phases. We might not see 40 people let alone have that many try to silence us because we are boxing. They would have to use a gold site or start some mass spamming of trade chat to get people to silence us.

Not that I use the chat ever, and seldom use mail. Though I wonder if addons like Jamba using channels to communicate will break from being silenced?