i've heard a few on rapnetwork.com there aren't any up right now but if you have a membership you can go into the archives. they ususally put them
up as soon as they drop on mixtapes or radio shows. for those of us outside of the major markets it's prolly the best place on the net for
freestyles and mixes.
Pretty much everyone mentioned here are good, I've got no biases towards most. I need to find a copy or two of old mos and kweli records, the only
stuff here is mostly commercial hip-pop crap, thought they did have some good albums like 2001, and doggystyle.