You have to stop thinking about apps as standalone things. We are quickly getting to the place where apps are all comprised of a client and server exchanging da

You have to stop thinking about apps as standalone things. We are quickly getting to the place where apps are all comprised of a client and server exchanging data over http(s). If you build a robust api to your data, then you can build many many client implementations to get at it on any platform. The Chrome platform doesn't require anything beyond what you're already building for your web client. Unless you're not building a web client, in which case why would you be worried about the Chrome web store at all? Note that there are tons of things to figure out in terms of network latency and up/downtime, some of which are addressed by the newer features of html5.