Popular PPT and Video Sharing Sites

Video Sharing Sites:
http://s1276.photobucket.com/
http://www.dailymotion.com/
http://www.veoh.com/
https://vimeo.com/
http://vzaar.com/
http://www.stupidvideos.com/

PPT Sharing Sites:

http://www.docstoc.com/
http://www.slideshare.net/
http://www.authorstream.com/
http://en.calameo.com/
http://www.scribd.com/

SMO Sites:
http://worldfloat.com/
http://www.iskoolar.com/
http://www.fropper.com/
http://www.hi5.com/?
http://bwithyou.com/
http://www.siteslike.com/
http://who.pho.to/
https://disqus.com/
https://bufferapp.com/
https://www.xing.com/
http://vator.tv/
manta.com
https://www.tumblr.com/
https://delicious.com/
http://slashdot.org/
http://www.reddit.com/
https://myspace.com/
http://www.stumbleupon.com/
http://www.pearltrees.com/
behance.net
meetup.com