[yan]

I don't see it as an issue. When something is "open source" it's always with the consent of the author and they'll still publish the source. Will this make it harder for you to peep to see what web apps are doing? Probably, but this isn't a licensing or an 'open source' issue.

[ice_man]

Yes, but before Google Closure, the internet was "open source" by default. I mean am using "open source" as a strict antonym to "closed source" rather than in the legal sense. With Google Closure, developers for the first time have a practical option of making the source code of their application unparsable to the human eye. Despite the fact that it is illegal to download MP3s, 95% of all MP3 downloads. Now imagine if it was impossible to download MP3s illegally -- it would significantly impact the music industry. Analogously, Google Closure makes it virtually impossible to read the source code of websites. Given that the entire Microsoft Monopoly was founded on the fact that its source code was unreadable to the public, I think the implications of this are significant.