Could it be that you are in their Gmail contact list? I don't have a public Google profile, and never gave Facebook my Gmail password, yet I get suggestions for people I have emailed once years ago. The only explanation I can think of is that I'm in their email contact list, or that they've searched for my name on Facebook at some point.
I know that Facebook uses the contact lists of your friends to suggests users to you [1], but I'm 99% sure Peter Norvig doesn't have my email address in his contact list, and that none of my Facebook friends are linked to him.
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Could it be that you are in their Gmail contact list? I don't have a public Google profile, and never gave Facebook my Gmail password, yet I get suggestions for people I have emailed once years ago. The only explanation I can think of is that I'm in their email contact list, or that they've searched for my name on Facebook at some point.
I know that Facebook uses the contact lists of your friends to suggests users to you [1], but I'm 99% sure Peter Norvig doesn't have my email address in his contact list, and that none of my Facebook friends are linked to him.