Because it’s a modification of the standard GreaseMoney install, Super GreaseMonkey may be a version or two behind the latest release. Also, it’s not currently the plugin that most people are using, which is important if you want others to use your scripts. Fortunately, you can also get jQuery to work with the standard GreaseMonkey install by manually embedding jQuery into your scripts. It’s only marginally more work, and will ensure that your script will work with other GreaseMonkey users. InternetDuctTape describes a few options for making this work, but the best recommendation is to download a packed version of the jQuery library and paste it right at the top of your script.