Speaking solely as a frequent book shopper ...

I see way too many promos -- Kindle Daily Deal spots, BookBub ads, back-cover copy -- boasting within the first sentence that a book is "riveting," "captivating," engrossing," or "page-turning." Worse are the boasts where someone combines the puffery (e.g., "captivatingly riveting"). Whereupon, generally, I lose interest. 

No. Just, no.
Because you know what I get from such assertions? The expectation that whatever's between the covers will be as annoy...