The list of 10 friends displayed changes slightly every time you visit your Facebook page.
It appears random, but it isn’t. Facebook says they use an algorithm that takes into account the people who interact most with you publicly. Things like posts they make on your wall, photos where both of you are tagged, events you both attend, comments on each others posts or photos, etc.
Facebook does a remarkable job selecting 10 friends from your hundreds or thousands of friends…while keeping it fresh and interesting.
Read on from Don Dodge’s blog for insights on the Facebook voodoo! via dondodge.typepad.com