Joost,
Yes - Contestants may submit as many entries as they care to. However, you may only win one prize. For people who submit multiple entries, the judges will select what they believe is your best entry and disregard your other submissions.
-Scott
Thank you, makes sence too me, but does this mean that a person who wins the one of the high five bonus prizes wont be able to compete anymore for the finals? Or is this high five bonus a "extra" prize (like the name suggests).
-Scott