It might help ATYCLB for a couple of weeks with the rush of U2 fans into the stores, after the first two weeks, I think beyond that it will probably hinder its sales more than help. Thats because the two most popular songs from ATYCLB are on the Best Of... . But ATYCLB has already sold over 4 million copies in the USA and over 11 million worldwide. One of the biggest sellers worldwide of the past 3 years.