A new version of my Use Google Libraries WordPress Plugin is available for download from the Plugin Directory, along with the full documentation and support forum. It mainly improves support for the upcoming WordPress 3.1 ((tested against RC1 and a recent SVN snapshot)) but it is still compatible with WordPress 3.0.
It seems that this is a popular plugin, as I’ve managed to end up listed as #517 in the WP Top 1000. I’m glad so many people have found it useful. If you’d like to support the development of the plugin I sure would appreciate it.