The Hackaday Prize. You Build the Future. You Go to Space.
hackaday.io
hackaday.io
Seriously? Italy?
See http://www.slideshare.net/Promosfera/sweepstakes-and-contest... and http://www.promosfera.it/faq_italia.php (in Italian).
This is the actual law: http://www.cr.camcom.it/files/concorsi-premio/dpr_430_2001.p... (in Italian too)
Basically, you have to have a fiscal presence in Italy, and your servers (or a mirror of them) must be here too. The assignment of the price must be done in front of a notary, and you have to take care of tax/vat as well.