A lone "thanks" doesn't seem to contain very much human element in it either, though; that just feels like somebody wanted to make a comment but couldn't be bothered to provide detail. What specifically are they thanking? Does the link make their life a little better (and if yes, how, so that others could emulate making more people's lives better)? If it was in reply to a comment, did they just read it or actually try whatever it was?
I think I dislike it because it reminds me of the busy exec replying with a single word, and that is definitely lacking in humanity.