Suppose I want to POST something. Do you do any checks of the veracity? Do you check for obscenity? Do you check for insults to deities from minor religions?

Suppose I want to POST something. Do you do any checks of the veracity? Do you check for obscenity? Do you check for insults to deities from minor religions? Do you check for copyright infringements? Do you check for invasions of privacy? I'd be interested to see how you think this can work, and the controls you would propose.