I recently finished a book I was looking forward to but wound up really disliking [0]. Throughout the book I found myself saying "wtf?" and I occasionally would complain to my spouse about it. After I finished reading, I went to Goodreads and enjoyed the schadenfreud of seeing how many other reviewers had the same reaction and reactions as me. I do wonder if a tool like this could help me experience something like this DURING the reading of the book rather than after, but I also worry about it lessening the book reading experience, contributing to attention drain, or lessening the experience of finishing reading a book and talking with others about it.
0 - Brandon Sanderson's Wind and Truth