The Dutch gambling regulating agency Kansspelautoriteit has announced guidelines for online gambling ads, stating (and apologies for the translation, but Buzzu doesn't speak Dutch so he's relying on Google Translate):
Full release from Kansspelautoriteit here: http://www.kansspelautoriteit.nl/nie...uari/leidraad/Since advertising has to lead to legal offers, it is now illegal to advertise online gambling, which are at this moment still illegal. Advertising that serves the public to generate a favorable impression of a particular online gaming business is not permitted.