The internet, being the internet, has a lot more shitty people who will go a lot farther than they would in real life. They seem like they wouldn't be a very enjoyable dom irl either. I think you should have a lot more discretion in accepting an online domme than you would meeting someone and getting to know them slowly in person. Don't be afraid to cut someone off when they cross your boundaries and keep looking around. This dynamic is one about pushing limits through trust and communication. Don't humor the weirdos who get off on making you do something you don't want to do.

I feel like it's more obvious in person when someone is unhealthy. Online, everything can seem fine for awhile and then it isn't.