Vitty, in my case we played a game of "twenty questions" on the 'net. We finally figured out that we had too many pointers in common, and "presto". For both our sakes, we didn't share names but it still didn't take very long to figure out who was who. I'd asked hubby about the members of his book study group, and he narrowed it down to the obvious choice.
I think it is much harder to deliberately search out people who live in your area. If it happens, it's chance.