How are you using them? Do you like that Facebook has included hashtags? For a long time, some Facebook users have avoided including hashtags on Facebook because they did not want to combine the features of Twitter and Facebook - they were used separately on each platform and were not integrated - so what was the point? Facebook has now taken on hashtags, so all the rebels who used hashtags before are now able to do so and they can be searchable.
Since the recent launch of Facebook's newest feature, the Graph Search, Facebook hashtags have taken on a life of their own. Graph Search brings you results based on the social graphs of your Facebook friends and followers. What does this mean? When searching, you will see the search results relating to your friends and businesses you are closely associated with.