Facebook keeps spamming me with different variations of "Friend Finder", "Find more friends" & co (mostly on the right column, where the ads belong), and I'm just wondering: why are they doing that?
I already have more than 250 friends, so they could see that I'm not new to Facebook, and it's likely that I already added almost all of my friends and people-I-know-enough-to-be-considered-by-Facebook-as-a-friend. So their goal is not to help me find real friends (that is, somehow improve my Facebook experience), but just to add more connections to their social graph. So if there is no interest for me in that, there must be some interest for them, but I don't see it.
Also my primary thought was that more friends = more information about me = more targeted advertising = more profit for them, but I'm really not sure if adding people who are not my real friends would help Facebook target me better...
What's the explanation?