NO reader has ANY obligation to an author, whether it be to leave a review or to write a "constructive" one. I put out a product. You are consumers of that product. Since when does that mean you have to kiss my ass? Hey, I like Pop-Tarts and eat them a few times a year; since when does that mean I'm obligated to support Kellogg's in any way except legally purchasing the Pop-Tarts before I eat them? I wasn't aware that purchasing and consuming a product meant I was under some sort of fucking thrall in which I'm only allowed to either praise the Pop-Tart (which to be honest isn't hard, especially the S'mores flavor) or, if I am going to criticize a flavor, offer a specific and detailed analysis as to why, phrased in as inoffensive and gentle a manner as possible so as not to upset the gentle people at Kellogg's.