Naïve time ago in words

NSDate+Soffes.swift

import Foundation

extension NSDate {
    var briefTimeAgoInWords: String {
        let components = NSCalendar.currentCalendar().components([.Second, .Minute, .Hour, .Day, .Year], fromDate: self, toDate: NSDate(), options: [])

        if components.year > 0 {
            return "\(components.year)y"
        }

        if components.day > 0 {
            return "\(components.day)d"
        }

        if components.hour > 0 {
            return "\(components.hour)h"
        }

        if components.minute > 0 {
            return "\(components.minute)m"
        }

        return "\(components.second)s"
    }
}