An easy way to trim some size off of your WordPress page loading times is to serve jQuery in your theme from the Google Libraries CDN rather than have your theme load WordPress’s internal version of jQuery which is located on your local server. I have personally used this technique a lot lately when developing WordPress themes to improve a website loading times, also by serving jQuery from Googles CDN you can easily update to the latest version of jQuery by simply changing the version number in a wordpress function.
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