Hey men,
After running Google Page Speed, my Compression Outcome was red-colored. Google Page Speed stated just about all my files — JS, CSS, etc. — ought to be compressed with gzip.

I added the next line to my .htaccess file.

<IfModule mod_deflate.c>
AddOutputFilterByType DEFLATE text/html text/css text/plain text/javascript text/xml application/xhtml+xml application/x-httpd-php

The Compression Results look slighly better - yellow! However Page Speed keeps stating that I ought to compress all my JavaScript libs and plug ins. I possibly could reduce them by 65% with gzip.

Should not my JS files be compressed now after i have text/javascript set as DEFLATE?

Apache also uses mime type application/x-javascript, this howto describes how you can place it.

Essentially it states you should utilize:

<Location />
    AddOutputFilterByType DEFLATE application/x-javascript

On the side note, you could also get a minifier/compressor such as the YUI compressor or perhaps a specific compressor that combines together with your software.