SLIDESHARE

SlideShare is an online slide hosting service. Users can upload files in the following file formats: PowerPoint, PDF, Keynote or OpenOffice presentations. Launched on October 4, 2006, the website is considered to be similar to YouTube, but for slideshows.  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. The website gets an estimated 12 million unique visitors a month.

http://www.slideshare.net/

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View more presentations from Hugo Polit.

VIMEO

Vimeo is a video-sharing website on which users can upload, share, and view videos. It was founded by Zach Klein and Jakob Lodwick in November 2004. The name Vimeo was created by co-founder Jakob Lodwick and is a play on the word video, inserting the word "me" as a reference to the site's exclusive dedication to user-made video, and is also an anagram of "movie." Vimeo does not allow commercial videos, gaming videos, pornography, or anything not created by the user to be hosted on the site.


http://www.http://vimeo.com/

Example from hugo Polit on Vimeo.