The concept itself is deceptively simple; just add the “#” symbol in front of a word or a group of words with the spaces between them taken out. This tiny bit of detail lets Twitter organically categorize your tweets, as well as anyone else’s, that make use of the exact same hashtag. In a very big way, it is the 140-character equivalent of assigning keyword tags to documents and blog posts. Learn More
By: Edwin Huertas, Social Media Today