Well... sex sells yes... could use a touchup of those pictures though before posting them for a better effect I'm sure.
However for best effect one should let our subconscious get to work and not have the goods so painfully obviouse to see. Would work much better if one worked with reflecting surfaces to reveal something sexy or odd, that the viewer might not notice but his/hers subconscious will and might think isn't ment to be seen. Mirrors are the most obvious but those are usually noticed by our conscious mind also so a little more effort is usually needed.
