I just think that if someone got muted system messages should be blocked as well. While impractical, using tiny tips or the name changing it's still possible to spam the chat.
Limiting the chat to players who used the site already defeats the purpose of the chat, as people quite often ask questions before getting started.
this could be a good idea, OP should make a requirement to chat like you must wager at least 0.01 btc before you can chat, this will decrease the spam
Yeah , I think that might be helpful. even some other casinos like PRC do that , and allow only people who have wagered 0.001 to chat.