People are being serious about not showing your face in your pictures. Here is an example I got from a "friend".
Well there are a few things you can do to make sure you haven't done anything stupid. Let me refer to the man on Ebay who was trying to sell his kettle. If you looked in the reflection of the kettle, you could clearly see the man totally naked, holding his camera up to his face. You'd be surprised how often you can look at a grow room photo on this very website, and see the author in the reflection. Don't laugh, I've seen it at least twice in the past few months. Don't take a picture of anything metallic, and if you do, make sure it is on an appropriate angle so as to not reveal yourself to the cannabis world! A good graphics man can easily turn a distorted reflection into a nice quality photograph.