How Did I Get on Facebook?

In the past week I've acquired a good number of hits from Facebook. I have no idea why. I don't have an account with them. I checked with my kids and none of them have linked me.

This is the first time I've seen FB in my referring URLs and sites. The only thing I can think of is that someone liked my blog enough that they chose to share me. Since I don't "do" Facebook I haven't a clue about how it all works and if there might be another reason FB is showing up in my stats.

Anyone have any thoughts?