iBooks, iTunes, Audible, and Amazon

I made this suggestion to Audible and Amazon, but Apple is an absolute nightmare of hoops to jump through to make a recommendation, or I’m just missing something obvious. Anyway, I read physical books and ebooks, and I listen to them as well. There should be a way for me to flag a book as having been read so that it displays “You’ve Read It” just like “In My Library” (on Audible.com) displays for purchased books. Also, if tagged as read, I should be able to rate and review them – even though I’ve not purchased from a particular vendor. This should be a system across all platforms: iBooks, iTunes, Audible, and Amazon. As it is now, it is so time-consuming to sift through what I’ve read and what I haven’t across various vendors when making a new purchase. I should say purchases, as it’s typical of me to buy a half dozen books or more at a time to read or listen to.