If you are them (U2), what is the point of playing a place if you are not going to sell it out?? Bands usually tour for two reasons, one they want to meet their fans and play for them (usually U2 falls in this category), and two to make money (everyone does). No offense, but smaller markets will not draw the amount of interest that a bigger market will draw. I would love to see them do stadiums, but they will only do them if they sell them out... I saw Bruce at where the Mets (about 55 K seats) play last fall, it looked really really bad when not all the seats were filled. When it costs money to rent out a stadium, it hurts when there isn't a sell out. I am sure they will add places like Miami, DC, maybe Cleveland, Columbus, Charlotte, Vegas, Toronto, Montreal, possibly an Edmonton or Calgary, Ottawa, and maybe Portland because they will draw people there. Or they could do a show at Notre Dame or another big college, but given ticket prices, that is a gamble. Expect some added shows for the bigger cities too like NYC/NJ, Boston, LA, and Chicago.