That's not it at all. Also, you never gave input, you just posted two links and a sarcastic remark. When it comes to the Oldies station, it will be mostly common sense things. Although Black Sabbath made some stuff prior to 1970, they'll be in the Rock station because no one classifies them as "oldies." The Beatles, for example, will probably stay on the Oldies station because the majority of their stuff was pre-1970 (even though they made songs in the 70s).