Early (first-wave) Gothic literature was a direct reflection of those in positions of power (read land-owners / nobility) nervous about losing their place in the social structure. Thus we have stories like Walpole's Castle of Otranto re-affirming, through haunted armor, ghostly wails, etc., the rightful heir to some property and sticking it to the upstart usurper. Today we have television shows like Supernatural, which after a few seasons devolved into various powerful, and often times corporate, camps vying for power through deception, intimidation, resource-control, genetic tinkering, and sometimes force--sound familiar?
That said, there are a lot of poorly written, but very popular, scifi, fantasy, and slipstream books out there just as there are a lot of well-written, but sometimes less known, books of the same genres. As a librarian directly involved in collection development, sometimes this can be a challenge--what to purchase for a collection and how to recommend it? Luckily, an intrepid few, myself included, have started a blog, SciFi & Beyond, which provides reviews and essays on science-fiction, horror, fantasy, and the weird. It's a fun work-in-progress and is a great place to visit in the internets if you are looking for some great reviews and insights.
Take a look here, and let us know what you think!