Share 'The black hole of promotion'

As many of you may know, when promoting a book, there is no instant feedback. Usually we're promoting a book that we: wrote years ago sold a while ago edited a few months ago forgot about once it was turned in for final line edits and now have to revisit to promote it The entire time we're promoting it, we don't know if the promotion is effective because we won't get a royalty check for a…