gambling platforms usually have chatrooms on their sites, but many gamblers who use chatrooms for spam so the team had to develop an anti-spam chatroom and determine the duration of the chat.
The casino already have a solution for spam in chatroom, here are:
1. Rule for spam will get temporary banned or permanent banned.
2. Hiring few moderators to moderate the chatrooms, they have a power to delete user's reply and ban.
3. User can create new reply after 1-5 minutes from his previous reply.
Most of users are active in chatroom is just to earn rain, raffle or free money from the casino or generous rich gambler. If there's no reward, I doubt the chatroom would be really active because there's no point to have a long conversation on there.
Spam was the reason for me to stop chatting in gambling chatrooms, the problem really exists, the more spam to delete, the more spammers to create new solutions for overcoming all the restrictions. Now I only chat when there are not much people in the chatroom, since chatrooms with many people became something like billboards