It was surprisingly easy to forget about facebook. I had already basically avoided it for a month or two. The twitter icon was my reminder/mindless app to kill a few minutes. Twitter sucks too, but its different.
I'll check my facebook when I remember, maybe once a week when my wife mentions a friend posted something crazy on facebook. I'll check my notifications for events, but its mostly garbage.
My tech-spider-sense says the masses are losing interest in facebook.