friend mining 

The act of searching through someone's FaceBook Friend list, in the hope of finding more people they can add as their friend.

Question: "I just saw Jane looking through your FaceBook, what do you think she was doing?"

Reply: "Probably friend mining again... loser!"

friend mining by Troy Ginbey December 18, 2007

Friend Mixing 

The act of intergroup mixing of friends from different circles. While initially it may be regarded as a positive, the act is more often than not, a complete negative. The act of mixing friends is the number one cause of "blowing up" someone's spot. It exposes you in ways that you thought you had yourself protected in. Friend mixing is a dangerous act if not done with complete care and caution. On average, only 1 of every 1000 friend mixes can be regarded as a positive.

Yo Mazin, why you blowing up my spot by letting Noha join our friend group and seeing old pictures of me that I thought only you and other people in our friend group had access to?
Now she's in the friend circle and gots access to them too? Man, you friend mixing be blowing up my spot.

Friend Mixing by The Anti-Mixer January 6, 2011

friendmining 

Searching through the friends list of your own contacts on sites like Facebook and Linkedin in the hopes of growing your own friends list for appearances' sake.

Q: How do you know Tom?

A: I don't really... I was friendmining and he is a friend of Steve's.

friendmining by retailguy October 16, 2008