Actually , in the EU we have those warnings on toxic products (including paint) , do not eat ,do not spray into the eyes , etc .

True, okay let me clarify.... it is generally good to warn people of things that may be harmful (especially if it's not obvious). On SD's new site, there will be a warning about responsible gambling. However, I believe there is little virtue in nanny-ism, in assuming that users and customers are all children, and must be coddled and protected from themselves. Most adults are adults, and ought to be treated with respect, professionalism, honesty, and courtesy. Treat people like dependent children, and you'll end up with a bunch of dependent children.
The recent complaints against Betcoin are because they are not acting in an honest or professional manner. Instead of running to the government and using coercive force to try to stop them, instead we are voicing our concerns to the community - concerns that are equally valid regardless of the industry.