Hashtags have now begun to get into the mainstream since Facebook adopted the concept in recent weeks. If you are on Facebook, you will see Hashtags in your news feed and when you click on anyone of them, you will see many other posts related to that topic.
If you have not been active on Twitter, you may not yet know Hashtags and their relevance. However, by the time you are done reading this post, you will know everything you need to know about Hashtags and how you can use them.