I was supposed to be a guest speaker but.... - I have been invited as guest speaker here and there, but this experience really stands out...the organizers gave me an invitation-program, ommiting my name and my talk on the program...it's difficult to go on with this kind of blunder...I hate to admit, but my pride has really been hurt...the nerve this people...they have invited me for over a month now, really pursuing me, following up, and all, then pffftt....they forgot this little detail...my name on the program. Great!