The Dutch gaming regulator Kansspelautoriteit (the KSA) has warned gambling sites operating illegally against using imagery associated with the country in an attempt to keep punters from their country from using the sites on the assumption that they're meant for them.
The regulator said that the move is a new step in fighting illegal online betting, and that underage punters were finding sites with the images and thinking it was okay to play there. The government believes sites cater to those in the Netherlands either: use a .nl domain, has Dutch language prominent, uses Dutch payment processors, or uses names like "fun poker", "red-white-blue casinos", or "lump bingo" to lure punters in. Starting June 1st, these guidelines will be in place and large criminal penalties will be in place for those who violate the terms.
The Netherlands has tight regulations when it comes to gambling, and it has put through some large penalties to major gambling groups that did not vacate the country in the past. The country is currently negotiating liberalizing the market, although no firm date on regulation changes has been made available.