Google Apps Marketplace Launches At Google Campfire One
techcrunch.com
techcrunch.com
Fortunately this is a complex space with plenty of room for competition and complementary services.
And apparently they are going to great lengths, like in GMail where you can add your own contextual objects (like they did with GMaps).
But this is only for companies that are willing to switch to Google Apps.
EDIT: of course - right after I praise them - I'm getting a 400 Bad Request on any app that I try to add.