This is a very, very good article showing a real purpose of writing software, and it work not with an Cocoa developers, it works everywhere in any ways.

Unfortunately where I live, developers try to impress each other and, as you can imagine, final result is disgusting... yes, maybe it has lost of settings and can be tweaked in any ways, but no-one, even a power-user could use it out of the box without reading help files, which sadly, in most cases are not written at all...

Thanks for great article, those are one of the most critical things modern software developer should think about.