What does 'Traditional' mean? What's the difference in that category and 'Best R&B Album'?

Just another way of saying "old school" style -- ala James Brown, Ray Charles, Sly Stone, Sam Cooke, The Supremes, etc.

It's kinda cool that thy're breaking down the genres a bit more. When they gonna do it with the dance category -- trance, ambient, house, techno, breaks & beats, jungle, bhangra, leftfield, downtempo, etc.

These days, almost anyone can get a Grammy. Even ex-pres Bill Clinton won one this time.