If you come across a casino that has been blacklisted, it means that there are certain things that the casinos are doing that are not allowed in this industry. Some of the reasons why a casino may find itself blacklisted include false advertising, plagiarism (theft of content), spamming and failure to pay players who have legitimately won. Before you engage in any online casino, does your due diligence online to ensure that it is not blacklisted somewhere.