In most popular MMO:s, local chat in major cities or player hubs is infested with advertisment for boost selling. In a game like wow, you can expect a boosting advert every 2 seconds 24/7.
To make our local chats, city chats etc better, please, offer a seperate chat option for advertisment of boosts. You can not, and will never be able to stop people from doing it anyways. But, atleast have a seperate chat window where people who care about this stuff. There needs to be serious consecvense to post boosting stuff in the wrong channel, because it severely distrupts player experience in the long run.
Chats could be made like this:
/General (random chat)
/Trade (Buy and sell items)
/Recruit (Recruit people for guild or look for guilds)
/Player Services (boost)
You should be able to edit your chat log and which one of these you want to see.
If you decide to be lazy, and just let people advertice their boosting on any trade channel, this games chat log will look like shit, and it will ruin the experience for everyone.
Ban accounts that advertise that boosting shit in the wrong place or all chats will look like this 24/7 in 1 month:
