No, it was useful to show any interest. There is nothing otherwise, even in GitHub there is only the number of views, and “unique views”, no number of downloads or anything, and that too is hidden from the viewer. The developer actually wants to know how much the software is used, should be evident because who writes some software, does it for others to use, makes no sense to do it otherwise. And how much people reply or write about it, as i said, evidently doesn’t well indicate how much they use it.
Thank you for asking, i think it is an important problem, i think there should be ways to get from people more feedback about the software they use. Say like SDL, if you read this forum, there are mostly posts about what bugs they found or what problems they had when using SDL. But what was good for them in SDL, it is difficult to find it out anywhere.