Good post Rey.

While this is perfect for a one-off it becomes a pain to manually shrink many files, especially when working with multiple directories.

I've implemented a solution that uses YUI compressor and ANT to automate compression and concatenation into a single JavaScript file to improve performance (see rule #1 http://developer.yahoo.com/performance/rules.html).

You should be able to easily replace YUI compressor with Closure without a problem.

The project is available via SVN here in case anyone is interested.

http://svn.betancourt.us/public/yui-compression-sample

Cheers.