Distinctly Jamaican Sounds
Distinctly Jamaican Sounds is my favorite new blog. Mp3s of the author's stellar reggae collection, complete with record label scans (I really appreciate this, seeing the record the mp3s came from really helps me contextualize things), and insightful commentary on each release -- this is what the WWW is for! The subtitle reads: "Jamaican music from the 1950's until the mid 1980's - Everything from mento to early dancehall reggae and all the stages in between!" Perfect!
If you grab one thing, check out the classic African Dub Almighty Chapter 3. But then sample a little Tony Tuff, or try out Alton Ellis' 1982 dancehall track. And don't forget to say thank you. I'll go do that now.