It's neither advisable or not advisable, you're the one who choose want to sell it to public or not because it has a correlation with privacy.

Even you upload an image without showing your face, but your image contain metadata which could make people able to track your location. Or there could be someone who know you close and live in the same city/village like you, they will aware with your existence.

When it comes to which board you should post, you could post in many sections including Bitcoin Discussion.