I'm a fan of death metal (though rarely the brutal, technical or slamming varieties), black metal, doom metal and smaller doses of other metal subgenres.
I use the standard 50% = blank tape system for my review scores, meaning anything above 50% is worth listening to while anything below 50% is worse than silence.
For review requests, I'll review any of the following:
-Death metal, but not so much brutal/slam/tech/prog unless it's really atmospheric or something
-Black metal of just about any type minus extremely borderline "black/noise" stuff
-Any sort of doom
-Folk metal, but only if it tends toward the blackened side of things
I'm not really up for power, heavy or thrash (unless it's black/thrash or death/thrash, etc.) for the time being as I'm not really that versed in them. I can't really imagine ever doing prog metal or metalcore/deathcore reviews.
Oh, and PLEASE only contact me for reviews if your band is actually metal! I've gotten a couple of requests from bands not on the Archives and not metal enough for me to add. I only do reviews here.