This post has some decent points about reviews and the fine print, but the rest comes off as a bit precious.

I travel a lot and have used Booking.com to save myself quite a bit of money over the years. I still regularly compare their prices with other sites and they are pretty consistently cheaper than competing sites.

The "hurry" parts of their site do induce a little anxiety but I tend to also appreciate the real time information so I know I get the room I want.