Daydreams, I was just listening to that last night! It's creepy!

(It also makes me thirstier for an Adele/John Legend duet!)
Also... I agree, Mike. "When We Were Young" will be more remembered than "Send My Love" in the long run, I think. It's got the classic sound and like you said, so many people own the album that everyone knows it, pretty much. Besides, literally whenever I talk to people about Adele and mention that song, they all know it and love it. Pretty much every adult that I've talked to says that's their favorite Adele song, or one of. I know I'm biased because I love the song so much, but I really do feel like it'll be a classic.