This is one reason why I prefer Goodreads for reviews. They have a system to mark spoilers, and the community is good at flagging reviews that aren't marked. Amazon is a mess of spoilers, which I'm sure most people using it know.
The only suggestion, though, is to avoid reading reviews for things you haven't read or watched yet, unless someone can attest to it being spoiler free.
Ironically, the spoiler reviews are exactly the ones I go looking for. I *want* to know the big twists before I read a novel. If I like the twist, I read the novel to see how it's staged. If I don't like the twist, then the book drops down my to-read list.
I doubt I'm the only one, so the spoiler might actually get you some sales.
OK, some people like spoilers, some don't. So why not give people a choice: add a spoiler alert, then those who like spoilers can read on, and those who don't can skip! Quite simple.
(my bold)I've got to say that if I were you, I'd have left it. If someone's put a spoiler in their review, other Amazon users will alert them to it (trust me on this - I've had it happen to me dozens of times, even when I've not put any spoilers into it). I definitely wouldn't make a complaint because that's just nasty - reviews aren't for authors, they're for purchasers.
MM
It would be nice if more people respected that some of us don't like spoilers, and appropriately labeled spoiler-ridden reviews or remarks. Unfortunately, it seems courtesy isn't hardwired into the human brain.
aruna:
I never intended to complain -- if I had written the reviewer it would have been to ask him or her -- gently -- to add a spoiler alert as a courtesy to readers, not to complain. What is nasty about that?
aruna:
Again, I repeat: this is not for me. It is exactly for purchasers.
You need to white out the spoiler. The grey can still be seen. And has removed quite a lot of my motivation to read Aruna's book......
Thanks for that.