Everyone knows that you can book a hotel room in HK using mainstream sites such as expedia.com or travelocity.com.
The advent of daily deals and discount sites has prompted several HK hotel sites to pop up. I have reported and used frequently hotel.hk as a point of reference, since prices listed on this website reflects travel agency prices.
Recently I also discovered another website that has comprehensive pricing and searching capabilities:
http://www.hotelinhongkong.net/
Hotel.hk also revamped its website to allow for extensive searching. Happy comparison shopping.