There's a bit more than the correctness of photography. There's emotion. Taking a look at some of flickr pictures that show up in explore or interesteness (what ever that is) I've found them very flat, both in color and in emotion. Rarely there is more than the simple tack sharp (or tack blur) technically perfect shot. And this is one of the reasons I stopped paying flickr pro. There wasn't really no way to say: Uau! This guy is saying something here! This is emotive and important.