I always used to hear people say that. "U2 sold out." I used to hear that about another band too, and I think I'll make that the subject of our next banner. Meanwhile - Did U2 sell out? What does that even mean?

I think it has to do with making music that's more commercial. Did they? And if they did - is that some sort of betrayal of someone or something? Doesn't "commercial" just mean more likely to have broad appeal? Is having broad appeal bad? Does it maybe mean they stopped being their true artistic selves?

Along those lines - Did you like their older stuff best, or their newer stuff? Or maybe their in-between stuff?