I ask this as I have read quite a few reviews tonight on Amazon and I am surprised to see quite a few people like to reveal spoilers in the reviews. Do you like to read a review of a book that contains spoilers?
I know that the reviews that I have read contain spoilers as they are reviews of books that I have read. I find this quite inconsiderate to the Author and also to the reader reading that review. It is a shame that people feel they have to give spoilers in their reviews. I suppose that if you have not read the book yet and are reading the review containing the spoilers that you might not realise that the spoilers are there.
When writing a review I try not to give away any spoilers. I also try to keep my reviews on the shorter side when I can, as it almost feels like you're reading an essay when you read some reviews as they can be quite lengthy.
I know my reviews might not be the best reviews in the world but they are only my thoughts and I hope that, that is how they come across.