What is social bookmarking and why don’t YOU use it?

So I continue to get amazed with the valuable information I receive from stumbling around folks links, browsing my network on Del.icio.us or just digging around. But then I realized that a great deal of folks don’t actually share their links, they more so browse. Why is that? Just in case you get the urge to share, he’s a reminder of why you have an account on mixx or propeller.

Thanks for the video Lee! Odd question have we all replaced social bookmarking with Twitter?