How do I contact a friend

I was invited to add a person as my friend, which I did, but I do not know how to communicate with them.

Hi Chris,

Depending on the privacy settings of your friends contact information you may be able to see their email or Skype name. You can edit the status of your own contact info so that your friends can see it. You can do this on the Settings page.

There is no internal messaging system yet.