Wendy, I agree with Darrel that your contributions to this thread have been very valuable. I'd hate to see you drop out of it because of the role playing. To tell you the truth, I've never been comfortable with it, either, but I thought it was just embarassement or shyness. Here, it wouldn't be nearly as bad because no one would be "watching me."
My thoughts on stepping on other's boundaries were that if we do, rather than getting pissed like I have, just announce that your boundaries/buttons have been pushed and try to deal with it by explaining the button, how it came to be and say how we feel, rather than blast the other person to heck! (Like I have...

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If we stop and think, like Darrel does, before we type... or even go ahead and type our feelings, then go back and re-word so that we delete any accusations or judgements the best we can, that way we'll also learn how to communicate our feelings without crushing those of others.
What do you think? It will take some practice, naturally, but we'll have learned quite a few things that way.
<font color=blue>This above all: To thine own self be true. --Shakespeare</font color=blue>
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Psalm 119:105 Thy word is a lamp unto my feet, and a light unto my path.