Even though there's not a vanity code, the automatically-generated preview code that Baradanikto mentioned functions the same way and doesn't need to be distributed as a link.
Viewer stats are all zeros for private/uncertified SDK channels too. But if you have an SDK channel you can add 3rd party stats like Google Analytics to track access. It's not quite as nice as getting the stats directly from Roku but it's better than nothing.
As I mentioned in response to another post, I would be very surprised if Roku provides the Direct Publisher channel source code. It probably contains calls to undocumented not-for-mere-mortal-use API functions or it could be written with the NDK instead of the SDK.
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