How long should a blog post be?

Not sure if this matters or not. I started writing an album review to post as a blog and it got ridiculously long. I'm not sure if there's an enforced word limit to blog posts, but I'm more so asking if it's deemed improper etiquette to post such a lengthy piece. Obviously nobody is going to read it, but I don't really mind that. I'd rather no response than an angry response. Sorry if this is silly to ask, I'm new here. Thanks!