You can no longer PM me. (w/ forum functionality complaint)

I think that by default messages should be turn ON.
At the start of this forum if I remember correct the default value was OFF which is wrong.
Users should enable their "private" mode by themselves and not by default.

For the case "somebody wrote me and he doesn't accept my reply", perhaps some small hack can be added.
When there is started chat between A and B , ignore that privacy except if user A has blacklisted user B..

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