As a Mac developer, I find this very exciting. While I share tlrobinson's concern about the mac getting locked down (and therefore dumbed down) like iOS, I thi

As a Mac developer, I find this very exciting. While I share tlrobinson's concern about the mac getting locked down (and therefore dumbed down) like iOS, I think at least it is now clear that we have several years in front of us, at least, where Apple won't try that. A Mac app I worked on a couple years back got "Staff Pick" on Apple's old, lame, "Get Mac OS X Software" page that just linked to our site. Lame as that page was, we saw a considerable sales bump. But it was nothing like the gargantuan effect we've seen from getting featured on the iOS app store. The exposure from getting featured is major, but even if it doesn't happen, the fact that Apple handles billing and provides the one-step, one-click process is a huge win for the developer. I expect that with an Apple-backed Mac app store, if you have Mac apps that are at all successful in the market now, you're going to see a massive increase in unit sales. I think that would be the case even if the Mac installed base was magically frozen at this point in time. (And that definitely _isn't_ the case.)