http://www.feedburner.comFeedBurner provides media distribution and audience engagement services for blogs and RSS feeds. Our Web-based tools help bloggers, podcasters and commercial publishers promote, deliver and profit from their content on the Web.
http://flickr.com1. We want to help people make their content available to the people who matter to them.
2. We want to enable new ways of organizing photos and video.
http://www.stumbleupon.comStumbleUpon helps you discover and share great websites. As you click Stumble!, we deliver high-quality pages matched to your personal preferences. These pages have been explicitly recommended.
http://www.youtube.com
1. Comment, rate and make video responses to your favourite videos
2. Upload and share your videos with millions of other users
3. Save your favourite videos to watch and share later
http://www.facebook.com
Facebook gives people the power to share and makes the world more open and connected. Keep up with friends, upload an unlimited number of photos, share links and videos, and learn more about the people they meet.
