This question's been bugging me off and on for over a year and recent events reminded me of this annoying incident. This was the scenario that happened (compressed for time):
I got to thinking again about maybe using a pen name when I start submitting stories again. My main reason for this is simple: my last name gives telemarketers apoplexy. I can't imagine seeing a customer try to find it on a bookstore shelf, or somebody on a book-talk radio show trying to pronounce it. It's tough enough for people I've known a while, let alone complete strangers.