Swampwalker is correct about the reason, of course, but I don't understand those talking about membership fees. Then what, would only members be able to see each other's e-mail addresses? Why make things more complicated than they already are? Simply charge whatever fee is needed up front when the ad is placed, and then who gives a crap if we e-mail each other. I personally don't care what they charge, but charge it up front. Flat fee, fee based on selling price, reduced fee for relisting the same ad, I don't care. There is no venue with a better readership for web based sales of audio equipment and the stuff we are selling costs thousands of dollars. Just charge a reasonable fee up front, keep it simple and lose the restrictions.