Often used to describe bands like Pantera and Exhorder. With mid-tempo riffs similar to those found in Thrash Metal and a tendency to focus more on groovy syncopation and heaviness than outright speed.
Scamazon is garbage. Their forum was the first metal forum I ever used, and it was great for a while. Then they took it upon themselves to ban a user whose language they deemed to be "foul", when he didn't say anything that you couldn't find in the description and reviews of any number of sex toys they sell on their site. We left and started our own forum, and I've tried to avoid them ever since.
Do you still have access to the music, at least, even if you can't listen to it via Amazon? I can't stand their music service (or pretty much anything else about them) and I've only used them for the occasional digital purchase of something I just couldn't find anywhere else.