However, when particular stories, authors or graphics makers regularly get enormous amounts of feedback with every post, I don't always bother commenting, feeling that my little 10 pence worth won't be missed.

I WOULD MISS YOUR FEEDBACK DEARLY, OKAY?

No matter how many comments I get... I treasure each and every one of them as if they were the only one I got, seriously.

And I'm especially happy if I get a comment from one of the people I consider "friends" (in a more specific way than just LJ friends, you know what I mean?).

That is especially true of those people who reply to less than a quarter of the comments they receive. They may read every one, but if they don't bother acknowledging them, even with a simple "thank you", I won't always bother leaving them! LOL

I absolutely agree with you. If someone take the time to live a feedback - any kind of feedback - the least you can do is acknowledge it and say thank you.

If people systematically don't answer my feedback (or my replies in general), I usually stop posting them.