It's possible that some of those folks you friended who didn't friend you back, haven't consciously realised(British spelling in your honour) that they didn't friend you back. Well, this will be a wake up call for them. If they care, they'll probably check your journal and see your post and recontact you. I went and doublechecked the handful of folks who had friended me and I hadn't friended them back, and found that all but one really don't post anything, or haven't for a couple of years, so I didn't think they really wanted to be added. One, though, I had missed adding, because her initial post was just a little confusing on the subject of friending, I read some of her posts then, and decided to add her. Hope you can get your readin' and ritin' done.
Laurie