I get numerous e-mails about people trying to contact other members on the forum via e-mail and they don't have their e-mail address. What is funny about it is when someone posts in a thread "email me" to someone else and don't have their email address available to the public in their profile. Here's how you enable this feature:
Click on the USERCP option on the top of the forum and then click on the EDIT OPTIONS link on the left hand side. A few options down you will see:
"You can allow other members to send you email messages"
Make sure this box is checked and then it will allow other users to get your email address from your profile.