ArsTechnica has quite an interesting software review for Delicious Library, a piece of Mac software, that talks quite a bit about what drives Mac culture and software:
"There is simply a "climate of excellence" on the Mac platform. Any developer that does not live up to community standards is looked down upon, or even shunned. Commercial, open source, freeware, shareware, it doesn't matter: pay attention to detail, or else."
(I think the application itself is pretty cool too, and it looks delicious!)