One Paperclip = One House?!
1) Someone really did trade a paper clip (after 14 other trades in a year) for a house!
Wikipedia - One_red_paperclip
Original Site: http://oneredpaperclip.blogspot.com
There have been other seemingly crazy ideas that have had some success:
2) Student sells each pixel on his web page for $1.
1 million pixels sold = $1 million dollars.
Wikipedia Article: Milliondollarhomepage
Original Site: http://milliondollarhomepage.com
3) A [...]