There are some rules but, for the most part, adult content creators can use Twitter to help generate a following.
I'm sure standing at a McDonald's kitchen for 8 hours a day, wearing long pants and a hat in 100° weather would be much easier than jerking off in front of a camera.
Either way, you might have quite the following as you continue to create more content.
You must be 18 or older to make an account.
Passports can also count as well.
Creators can charge between 3 and 100 dollars to unlock a message.
How and why is it valuable? Whilst some of this you can change or amend, you cannot change your Username after you have set it.
It should be catchy, but also easy to remember and spell.