It has never really been very (relatively) easy to 'unfriend' someone on Facebook. For some time, the only way to do this was to click on a link all the way down at the bottom of the left-hand column of their profile page.
With the launch of the new Facebook iPhone app update, unfriending someone is now just as easy as sending them a message.
It is unclear when this functionality will be rolled out in other mobile device updates.
Generally, I don't unfriend someone unless they do something egregious. I believe the last person I unfriended was sending me event invites for his political event 3-4 times a day for a week straight, and that was months ago.
I know others are much more pro-active about curating their friend list and will see this as a very useful feature.
So where do you fall in this? Are you an unfriender? Will this new feature be handy for you?