Are you following me on foursquare?

Or is this yet another coincidence.

Are social networks playing mind games on us?
A few years ago, bumping into a friend down the street was a happy surprise.
Now when it happens to me, a little part of me cannot help but wonder if perhaps they knew I was going to be there.

I have run into an acquaintance several times in the past month.
This is someone I would never normally run into, unless it was pre-planned.
From my knowledge this person is very anti-technology.
But, is it possible that they have a minor stalk - on?
It's a little creepy.