That's not so. Last week a new topic of mine was removed (again), including at least one reply, and there was no notification, no personal message, no trace, no nothing. It was simply gone.
In that case I retract my attempt to be more fair... maybe they can ninja-edit a redaction into my post above for me In all seriousness though, I understand it's a company tool and promotional forum for them. And in general I think it's moderated well by a small team that already has better things to be doing. But, it's also by far the most active and best resource right now for this sim and any user development happening around it. Few things can sour an online community faster than iron-fist modding or not being transparent about it, and this one needs to thrive until other alternatives grow big enough to be useful. I don't think transparency via mod-comments on any deleted or edited posts is too much to ask, and every other good forum out there does this already.