It would be cool if Stack Exchange supported LibreJS, a Firefox extension for blocking non-free non-trivial Javascript code. Currently LibreJS blocks almost all of it. For example I had to temporarily disable LibreJS in order to pass the CAPTCHA test, which is not a good thing.

Edit: I forgot to attach the LibreJS report.

List of accepted JavaScript in LibreJS support

This script has been tagged as free software by LibreJS authors. http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js

List of blocked JavaScript in LibreJS support