I guess I talk to people for a bit longer, get to know them (what area they live in, why they're at the library, what they're interested in, etc. before I'd give them any personal information). But I don't know if I'd pick up "friends" in a public place like that in the first place? My brother met his 2nd wife at the "pool" and that didn't work, LOL. I have to know I have interests in common before I'll work too hard to make a friend and I don't know that the quiet of the library would allow that to be very possible?