A general indicator of when it's time to stop (publicly) listening to an artist is when she becomes a four-year-old's hero. When that four-year-old is your niece named Charlotte (nicknamed "Lil Sis") who is a hundred times cooler than you ever were--or are--it means you keep openly loving Karen O., too. And you don't stop.
This one's for you, Sis. xoxo
Sis also recommends watching the making of this video. The director, Barney Clay, filmed live projections of the Yeah Yeah Yeahs onto smoke in the Hollywood Forever Cemetery in Los Angeles. Essentially this whole post is making me feel weepy and missing my home.