Spam Bot Ads and Spam Follow Bot
Usual Spam Bots, the last in time "Bigfollow"
Use anti-bot system with algorythms to detect these kind of bot, who the the same sentence with variations, characters variations, space variations, etc...
Twitch detection should learn and create auto-detection for them :
a user enter a channel, post one message and leave, enter another channel, post the same message (or same message with variation) and leave..
the last spam bot is easy to detect, because they use the same keyword in their sentence variations : Bigfollow
Twitch please use an auto-detection, and ban them.
And allow users to the new words to that "keyword list used in sentence by spam bot"
The same for the FOLLOW-BOT, they just enter a channel, follow, unfollow immediatly, just to activate the trigger and display their "ads username", and they continue, enter a new channel, follow, unfollow...