I know this is a silly question, but: Is there any reason to make friends?
In other words, what functions on the site are related to your list of friends? Do you get notification of their posts, or somesuch?
I should probably mention that I'm from the pre-Facebook era, and only have listed friends ("Geekbuddies") at one site, BoardGameGeek. And they're all people I know from the non-online world.