It’s been almost exclusively populated with social media slide decks, but I’ve added some about mashups this morning, and there are some more to add about Cloud computing and the like. :-)
You should be able to scroll up and down the list in the bottom half of the widget below, and view the different presentations by clicking on the appropriate title. Click on the right-pointing arrow to start the preso, or use the arrows underneath to steps through the slides at your own pace.
Hope you find them useful! :-)