I did this a few years ago. I had stumbled on a hilarious video made by a husband and wife, exploring their ancestry. I set up a Facebook page and began “collecting” people with their unusual last name. About 20 of them accepted my friend requests. For two years I was imbedded in their clan.
Several had unusual friends who ended up on my friend list, including a professional speaker and a drag queen.
I tend to view the Internet as a huge playground. That’s the only explanation I can give you.
Some years ago when FB was relatively new, I was listening to “27 Jennifers” by Mike Doughty and remembering my high school during the peak Jennifer years, and I thought it would be amusing to see how many Facebook friends named Jennifer I could amass. I never did anything about it, and there’s no good reason why it amused me.
That said, it would probably creep me out if someone did it to me. Which is probably why my better nature prevented me from actually going through with it.
I am Facebook friends with a somewhat famous actor who shares my very rare last name.He did a search on our name and contacted me. We exchanged a few emails to see if we could find a link, but no dice so far.