I have none. I have no itunes account, and no appstore account. That means that I can't use any of these apps and that's exactly how I want it to do.
iTunes stopped being vaguely usable around OS X 10.4, FWIW. The AppStore may be nice enough to use, but is probably not worth the deal for me; Apple has no business knowing anything about me.
As I don't like what's coming with OS X anyway, sooner or later I'll jump ships for good.