Yes, I know, some people view Amazon as something akin to the Anti-Christ. However, they're not all that bad. (Not like, oh, say, Monsanto.)
Yes, Amazon's buying Goodreads. No, it doesn't mean the end of Goodreads as you know it. I've written a blog post to summarize it, along with providing several relevant links on the matter to help you suss out the truth and make your own decision.