I like that idea, something like a 'friendly radar' keeping those who aren't total ghosts connected to you somehow.
And yeah, I do feel bad sometimes, probably more often then I should, but I'm an emotional crybaby so take that as you will. Actually I kind of feel bad for liking things in my feed and of my followers, because they assume I'm really into their content if they keep getting my likes.
Some guy emailed me, someone I would never want to associate with, and the message was totally inappropriate and not what you'd send to someone in a business sense, so he clearly thought that my likes (and automated follow) were genuine enough that it was worth telling me how much he wanted to uhhh, you get the point.
It's a big social experiment to me, but it could have some real consequences as these are more often than not, real people who also get emotional about losing/gaining/getting likes, and not just bots racking up numbers.