Social Bookmarking

This week’s activity in Learn Camp encourages us to explore different social bookmarking websites, like Flickr and Delicious.  I have never heard of Delicious so I thought it could be a challenge for me to understand, but once I got started I noticed the familiarity with the website.  There are so many social bookmarking tools available on the web!  Ever heard of Pinterest, Flip Board, Stumble Upon, or even Twitter?  All of these websites allow you to browse various webpages that are of interest to you through the use of tags, and most with the ability to save them.  With so many available, I am wondering which one is best…?