You are wrong. You have no inherent right to post on a private forum.
The medium is private, the forum isn't.
Free speech from a quick wikipedia search: 'Freedom of speech is the freedom to speak without censorship and/or limitation. The synonymous term freedom of expression is sometimes used to indicate not only freedom of verbal speech but any act of seeking, receiving and imparting information or ideas, regardless of the
medium used.'
Can an attorney give me a view on this?
edit: nevermind found the answer:
' International, national and regional standards recognise that freedom of speech, as one form of freedom of expression, applies to any medium, including the Internet.[3] The World Summit on the Information Society (WSIS) Declaration of Principles adopted in 2003 makes specific reference to the importance of the right to freedom of expression for the "Information Society" in stating:
"We reaffirm, as an essential foundation of the Information Society, and as outlined in Article 19 of the Universal Declaration of Human Rights, that everyone has the right to freedom of opinion and expression; that this right includes freedom to hold opinions without interference and to seek, receive and impart information and ideas through any media and regardless of frontiers. Communication is a fundamental social process, a basic human need and the foundation of all social organisation. It is central to the Information Society. Everyone, everywhere should have the opportunity to participate and no one should be excluded from the benefits of the Information Society offers."
'