The real responsive design challenge is RSS
Hey, a post about RSS content quirks! It makes me feel young again!On a more serious note - RSS is the Great Web Leveller. It spites your fancy CSS hacks, it's disgusted by your insane javascript, and it will piss all over your "mobile-optimized" crap. No semantic markup == no party; because markup is for robots, and RSS parsers are very stubborn robots that can see through web-hipster bullshit like Superman through walls.The only real sin of RSS (beyond the holy wars and format bikeshedding and committee madness and and and...) is that it's too honest a format. It's a format for stuff that matters, for content that deserves to be read; it's too pure to survive in a world of content silos, stalking analytics and inaccessible material-designs. Its innocence doomed it in a very poetic way.