Originally Posted by Man Eating Duck
What do you think about a clause on the colophon page saying something like "Please give feedback about technical quality to <email address>"? Is it defeatist, or a good thing? I have never seen neither publishers nor self-publishers use it,
but I've given feedback nonetheless at times
It's just because you do not read French ebooks. Here is one colophon example of it from a very qualified source.
(at least the full EPUB version)