IANAL but connecting to any of these VNC's listened here is probably a felony .
At least in the netherlands it probably is. Eventhough these are open to the public, the intention was probably to be private. Deliberately connecting to something that has the mere intention to be private is a felony here. [0]
[0] http://wetten.overheid.nl/BWBR0001854/TweedeBoek/TitelV/Arti...