1) SLIDESHARE

Slide Share: http://www.slideshare.net/

When looking for a way to share your ideas though presentation, consider using SlideShare.  SlideShare is an online community for sharing presentations. Many professional and educational communities use this online tool to present and share their ideas around the world. With over 60 million monthly viewers, ideas will be noticed and shared.  Additionally, SlideShare contents spread virally through Facebook, Twitter, and Linkedln making it worthwhile. 
Some things that you can do on SlideShare:

• ·         Upload presentations publicly or privately
• ·         Download presentations on any topic
• ·         Embed on blogs, websites, company intranets, and YouTube videos
• ·         Share on Twitter, Facebook, Linkedln
• ·         Slidecast: sync mp3 audio with slides to create a webinar