This is interesting. I didn't have a lot of of those relationships, probably because I didn't follow people with whom I don't have reciprocal relationships. It's always been a goal of mine to keep my flist small enough to be manageable to read and comment on people's entries. Only in the last five years have I been adding more people; so I'd see people with 200 mutual subscriptions on LJ, and I'd have like 63. LOL Even now, I've got less than 100, and many of those people don't post anymore or post very irregularly.

I have been friends with what I would consider BNFs but always in reciprocal relationships where they comment on my posts as much as I do theirs and respond to my comments, etc. I've only been friended to one or two people who didn't really engage with me in my own journal.

This is really interesting to think about.