All of the suggestions seem improbable. The question mark (top and bottom) is part of the question text, but not part of the numeral text. Without the question mark, one could say the entire puzzle is pointless.
blackjack
<a href="http://c.casalemedia.com/c?s=51816&f=3&id=0" target="_blank"><img src="http://as.casalemedia.com/s?s=51816&u=http://perplexus.info&f=3&id=0&if=0" width="120" height="600" border="0"></a>
flooble's webmaster puzzle
re: other idea
