The news is now known: even on Facebook you can enter the hashtags, those words preceded by the hash sign (#) that have characterized for a long time the updates of Twitter, Google Plus and other social platforms.
What are the hashtags and what are they for? Hashtags are keywords that allow users to understand the topic addressed in the update, and make it immediately traceable in internal searches of a social.
The hashtag, in fact, is a link that refers to a real web page where all the updates that share that single hashtag are present.