Those people are still (almost certainly) following me, but I'm not following them (evidenced by their comments to my infrequent postings). But unlike Twitter, that's not the default. Twitter: default one-way, two-way requires effort. Facebook: default two-way, one-way requires effort. You wrote that there are no one-way followers. I was simply trying to point out that it was possible to end up in that situation.

The connection is often more formality than anything else (we game together, play soccer together, blood-relations, etc.). And they seem to like my posts, so they're following me, but I don't care for theirs and unfollow them.