I would say generally I am totally honest in what I post. *However* if something offends me but I am aware that the offence is part of my naiviety or nervousness around some things - I don't post a reply. Let me explain...I saw a post on a certain kind of porn which I wasn't even aware existed before I read about it here! (can you believe I am 24!?)...it's not that I disagree with doing it, I just don't feel my opinions about it would be valid if I don't enjoy that sort of thing...am I making sense?
In other words if I felt I had a valid point in offending somebody, and was knowledgeable about the subject, I'd probably risk it here as generally people are so open-minded and more willing to accept different viewpoints and not be disrespectful of one another than elsewhere