But it's still an "open" system by everyone's definition of the word - the source is open, the API is open, everyone is welcome to use it and make changes. It's just that Google is not obligated to accept them into the official tree. Who cares how the development process looks like? Android is open, and claiming otherwise is foolish. e.g. Amazon's Kindle Fire version of Android.

> The property of being 'open source' applies to specific copies of software. All that 'closed' stuff you were talking about is applied to non-public copies so it has no relevance to the discussion of the open source copies.

Do you actually have an idea of how the GPL works? Because what you wrote here indicates you do not. SourceFire (the company that makes Snort) used to provide the source under the GPL, but then continued to develop it and provide PUBLIC copies without source. No one, except themselves (as the right holder) could legally do that. That does not make the open GPL versions any less "open source" or "open" in general.