Genesis dances into the Hall of Fame with Abba

On March 15, the Rock n' Roll Hall of Fame will welcome new members to its hallowed hall.  The 2010 class will include Genesis, ABBA, and others.  Now, Genesis I can understand; they've had a long, diverse career, but ABBA getting in puzzles me.  I mean, I'm not on this track because of the disco aspect, but their music just didn't seem to innovate.  To be in the Rock Hall of Fame, in my opinion, you need to be an innovator in music.  I just don't think ABBA fits into that category.