@KF yeah but that's you, a fan, radio is for the mass market who only ever know one or two songs per album from an artist. They appeal to the lowest common denominator, the "casual fan" not the dedicated fan.
@KF Smells Like Teen Spirit is the best known Nirvana song. Its what broke them across the mainstream. I agree they have better sonds, but say the name Nirvana to most people and the first song that springs to mind is this one and not any other. Just like the only album cover that anyone remembers is Nevermind and the naked baby in the pool chasing the dollar bill.