What's that song?

When did radio stations stop announcing the artist when they play a song? What could possibly be the reason for not doing it anymore? It's not like they even need a DJ, just prerecord someone announcing all the artists and attach it to the song files. There are groups I didn't even know I liked, because I knew the songs from the radio but didn't know who they were by. A friend was talking about seeing Papa Roach in concert and I had no idea even what type of music they played, so it was a short conversation. Then I looked it up and realized I like them too, I just didn't know their name before. Or this morning, I heard a new song I liked by a group I know I like, but I just couldn't drag the artist's name from my memory. So I'm SOL and can't download their new song until I hear it again and hopefully remember. But if the DJ had kindly said, "That's the new song from X", I'd be set. I wonder if the radio stations' websites list the playlist for each day. I'm gonna have to check it out.