Never.  I have posted suggestions for improvement, when the poster has indicated critical comments are welcomed.

I disagree with webster that people without galleries shouldn't comment.  I believe that, since the galleries are publicly viewable, anyone should be allowed to comment.  After all, we all have opinions on TV shows, footballers, music and so forth.  Doesn't mean we could write, act or direct a show, play football or play music.

Coppula eam se non posit acceptera jocularum.

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