SLIDE SHARE

SlideShare is a Web 2.0 based slide hosting service. Users can upload files privately or publicly in the following file formats: PowerPoint, PDF, Keynote or OpenOffice presentations. The website was originally meant to be used for businesses to share slides among employees more easily, but it has since expanded to also become a host of a large number of slides which are uploaded merely to entertain. You can get a free acount to upload and share or get a pro acount to get more. 

For more information get in: http://www.slideshare.net/

That's an example from my SLIDE SHARE account

                                                                                   

View more PowerPoint from claracamb