You know when that movie came out about something like this. The Box [http://www.imdb.com/title/tt0362478/]. It was push the button for lots of money but someone somewhere would die. I never saw, but I had this idea that if I was the guy offering that choice, I would make the pool of people to kill out of the people who pushed the button. (I didn't see the movie, so that could have been the case, but I doubt it)
I guess what I am saying is no I wouldn't and you would be a pretty vile person if you did. Also, I think pretty much everyone has trolled in some way or another at some point.