Send a face picture in a message.
A lot of people don't like posting face pictures.
So; why not have a section in your profile where you can upload a private face picture (just one photo) and maybe a way for someone to monitor these pictures to make sure they are only of peoples faces (if you need a hand i'm more than happy to help, as I have administration experience) that you can send in a private 1-on-1 message. Instead of having to swap e-mails and/or links to other profiles on various websites people may have.
We now have photo attachment feature for messages. Thanks for your feedback.