For 1980s music lovers, I wanted to recommend an online radio station I have been listening to for over a year.
http://1980s.fm/modules.php?name=Queue_Playedhttp://hi5.1980s.fm/;/;.m3u - the link I use to listen
They have over 20,000 songs, so not only do they have hit singles, they also have album tracks. And you can sign up and request songs too. I have discovered so much good music I never knew existed! Bands/singers from all over the world.
This radio network also has a few other stations, though none of them are my tastes:
Death.fm - Black/Death Metal
Streamingsoundtracks.com - Movie Scores
Entranced.fm - Ambient/Lounge
Adaigo.fm - Classical