[Spotted in Richard Demers Blog>http://www.cincomsmalltalk.com/userblogs/rademers/blogView?showComments=true&entry=3239875946].

At the risk of beginning some sort of 'in breeding' smalltalking blog circle, I thought I'd throw me 2c in on this one. Exception's for UI's - big no!. Why? Well you're requiring the user of your domain library to wrap up ALL your exceptions. This, my friends, is manifest typing.