Behold: your one-stop shop for all 2013 headliner speculation. A place to argue about unsourced internet rumors concerning Daft Punk. A place to discuss the potential of a lady headliner. A place to consider the headlining merits of various classic rock acts that will never play Coachella. A place to debate the "rap headliner every year" postulate. A place to request Radiohead, again.
I'll kick things off, Green Day will have 2013's Black Keys/Kings of Leon/Muse/Killers/Jack Johnson/Red Hot Chili Peppers "our songs are played on heavy rotation FM radio" headliner spot.