A hashtag is a label for content. It helps others who are interested in a certain topic, quickly find content on that same topic.
A hashtag looks something like this: #MarathonBombings or #SmallBizQuote.
Hashtags are used mostly on social media sites. They rocketed to fame on Twitter. But now you can use hashtags on other social platforms, such as Instagram, Facebook, Pinterest and Google+.
Anyone sharing content on a relevant topic can add the hashtag label to their message. Others searching for that topic, can search for that label to find other messages on that same social media platfor
Hashtags for such situations also provide a way for the public to express their sentiment – something many of us feel compelled to do in the case of a disaster. When it comes to natural disasters, a hashtag is like an information lifeline. We cling to it, to learn more about the event and provide an emotional outlet.