SlideShare is the YouTube of the presentation world; it’s possible to find a presentation on practically any subject and many of these are very, very good. I’ve used the site a number of times to get a better understanding of certain topics and create better presentations of my own.

From the SlideShare site:

SlideShare is the best way to share your presentations with the world. Let your ideas reach a broad audience. Share publicly or privately. Add audio to create a webinar.

SlideShare, an Internet start-up, launched in 2006 and has just secured $3 million in funding for the next phase of their development.