Your responses have already caused a lot of discussion within my writers' group. I may check back later with additional polls, including one suggested down below in comments: What makes you drop a book like a hot potato :-)
If you haven't answered the poll yet, and you're inclined to do so, please feel free to add to the cacophony:
http://mindyklasky.livejournal.com/10343
Mindy, reviewing poll results with a mind slightly boggled...