I think if there were a field in the profile that said something like 'PMing me is ok' Or 'Ask before you PM me' or something would be nice. There are some people here I'd like to pm sometimes but never really know if it's ok with them or not and too shy to just try it and find out.

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"Old man, how is it that you can hear these things?

Young man, how is it that you do not?"