Don't we have all of these spams and shit posts? they are here regardless, so why not charging $0.1 per post if you are going to wear a signature?
Do you even know why your governments ask for tax from you? because they can't run a country for free, when you are posting for free and even are getting paid for it, you'll get Bitcointalk.org lol part 3.
Why does the tax get dragged here? Anyway, getting paid by posting is a reward and only those who are deserving should have it. People often forgot that this is a "forum" after all. No need to elaborate what is a forum, what it should contain, etc.