Two things that I would wish more members would include in their profile is "direct mail" and location

You can make it possible for other members to e-mail you without disclosing your e-mail address. When clickling on e-mail for those using this feature, the following pop up:
The member you have chosen to communicate with does not publish his or her email address. However you may contact this member via 8052.com. This means that you may enter your message in the field below and it will be delivered to the member's email address. That member may then reply directly to you via email if he or she chooses to do so.

Your location hardly need be secret.

Why the above requests? well ocasionally I would like to let a poster know something that is not of general interest (e.g. "you can buy component x at supplier y"). This would be totally ridiculous if the poster lived in farawayistan.

Erik