Hey, mine was given to me by an honest to god milkman.

To the OP, It's an easy way to carry a nice looking, relatively cheap bag that does a good job on the bike and off. For short urban commutes where you want to look somewhat stylish, I have yet to find a better solution than a nice bag in a milk crate. For longer rides, it's still a pretty good choice, even if you get more Fred points than many of us want.