Google +1 and Yslow

[GKLA]

After adding Google's +1 script and call to our site (loading asynchronously), we noticed Yslow is giving us a D for not having expire headers for the following scripts:

https://apis.google.com/js/plusone.js
https://www.google-analytics.com/ga.js
https://lh4.googleusercontent.com...

1. Is their a workaround for this issue, so expire headers are added to to plusone and GA script?

Or, are we being to nit-picky about this issue?

[matbennett]

Nit-picky I reckon.  Yslow is great for diagnosing a problem. I'm not sure it is best used as a strict checklist.

If the script is loading asynchronously then it should interfere with the user experience which is what counts.