"The Tokyo Zodiac Murders", huh.. I want to read that again. Randomly found it at the uni library. I think that's one of the books that got me into Japanese mystery novels. I don't have much at this moment but I do keep a lookout for them on Bookxcess (because they're usually sooo expensive). Some books are available for under RM40 on Book Depository.

Speaking of spoilers... I usually just try avoiding them while keeping an open mind. If I see just a tiny bit of certain paragraphs or scenes I won't be too hard on myself. Like me and The Hunger Game books/movies. Since my siblings watch the movies, it's unavoidable that I saw (and remembered!) some of the scenes in the movies (except endings, I try to avoid them like plague). Fortunately, it doesn't really affect my recent reading experience. 

I love that you can filter/mute words on Tumblr (tags & post contents) & Twitter (mute words/hashtags). Add #spoilers and all its variants to the list and you should be okay, most of the time. If people post stuff without text and tags, then the filter/mute feature won't help much. Which is why I'm very picky of who to follow.