Very interesting topic. I really hope that I am, and am seen to be, one of the exceptions to the rules.
I was "kicked out" for commiting adultery. I was a born-in, but I was well aware of the consequences of not following the rules when I was baptized as a child, then married as barely an adult. I expected to be disfellowshipped for my actions, I did not expect anyone not to shun me on the basis of personal friendship or family relationships.
I have been out of the WT for over 14 years. In the first few years after I was forcibly liberated, I explored all sorts of behaviour within legal limits. I had been told all my life that that is what everyone who wasn't a JW was doing. I thought it was normal. It finally dawned on me that everyone wasn't sleeping around, getting blind drunk, swearing constantly and so on.
I found online XJW communities (H2O, Tishie's board) around 1998. The information I found crystallised what I already suspected - JWs were not the "truth". I may have had some robust discussions online but I hope that I have never overstepped the line into abuse and bad manners.
I still check this message board because it is useful to know what is going to affect my parents. I am an ex XJW. I am just normal now.
On a related theme, I was thinking recently about what a shame it is that hateful people have forced Simon to withdraw this forum - and from within the XJW community! I have tended to think that the WT is losing the cream of it's flock - the kindest, the cleverest and the most conscientious. However, JWs are a cross-section of the wider community, a mixture of good and bad, nice and nasty, and to some extent that is going to be reflected in the XJW community too. Some of us are too good to be JWs, and some aren't good enough.