There's degrees and degrees to things, degrees and degrees. We call a situation where someone insists that for every 80 pictures that they rate in someone's gallery, the other should be rating 80 back, "mechanical" reciprocity; it's a certain kind of reciprocity, but certainly not the only kind. A situation in which someone takes and never gives, any such situation, lacks any reciprocity at all. And a sort of approximate, over time, it'll work out eventually (expectation of) reciprocity exists, and a lack of need for reciprocity in every last sort of thing - this tends to be my opinion and isn't universally shared- in a healthy friendship.
(If I don't mention names it's because I really am not saying "oh, you know who you are, I'm not..." - erm.- besides the fact that I'm not excluding myself, the attitude I don't like so very much is all over the site- and not just this site- and not just-... and I have to leave now, meeting a friend for a get-together, so...)
