When joined a year ago, didn't had any friends at all. Did joined the forums and meeting wonderful friends along the way.
To add a friend..
Go to: https://www.fitbit.com/friends
At the right side, by 'find more friends', click 'Invite by Email'. Follow on screen instructions to send the invite, when accepted, you'll be Fitbit Friends. 
On the forums:
Click on the username next to the post, on the next page next to the users picture click 'go to fitbit profile', on the next page click 'add friend' (next to the users picture).
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