I really like where this is going; took me a long time to re-write the stock css but otherwise, the forum's front end management and integration with Joomla (rather than being a bridged solution) is wonderful.

One note though; on JED it says that the extension is GPL'd but the following copyright exists in the admin side of the component:

Agora Forum version 2.5.5 Pantheon © Copyright 2007, 2008 Hazzaa Kassis, Marc Ross & Evgeny Marchenko

Of course, this plugin is very useful in giving people the functionality of Sharethis on their websites... but its not the most agile implementation - unlike existing sharethis extensions for Wordpress and Drupal, you can't selectively include the Sharethis icon in article footers/headers/etc per category or via Joomla's menu item management; so the only inclusion options for it with this plugin seem to be in content using a {sharethis} tag or automatically in a certain position, *for every post on your site*!

This extends the functionality of Joomla as a CMS quite a bit but needs a couple of things- most importantly, it should allow admins to edit displayed content on the front end!