I wholeheartedly agree with Mark Passio's stance that morality and freedom are commensurate and directly proportional.
In other words the more morality the more freedom, the more immorality the more slavery.
For morality means not treating others in a way one would not wish to be treated and the vast majority are happier being free of physical, psychological and financial predation than the opposite.
Of course the substance of this position does hinge in practice on what one means by morality, as some people view homosexuality and recreational drug use as immoral practices.
The content of moral principles is itself contentious and behind a great many controversies and polemics.
My general rule of thumb, however, is that an activity that does not violate the rights of others not to be harmed, thieved or coerced, i.e. victimless deeds, is not prima facie immoral.
It has to be stressed that victimising yourself, e.g. Christian saints engaging in self-flagellation, the act of suicide or other contemporary masochist practices, is not itself immoral if done with your own consent and arising from your own free will.
Accepting money from someone or having sex with them is not immoral either provided consent has been established between the parties and this consent itself was not the fruit of fraud and misrepresentation or obtained coercively or under duress in which case it is not consent at all but enforced compliance.