Yesterday Facebook announced support for hashtags and this news has excited marketers and users of Facebook:
Introducing Hashtags on Facebook
Starting today, hashtags will be clickable on Facebook. Similar to other services like Instagram, Twitter, Tumblr, or Pinterest, hashtags on Facebook allow you to add context to a post or indicate that it is part of a larger discussion. When you click on a hashtag in Facebook, you'll see a feed of what other people and Pages are saying about that event or topic.
If you are using the Facebook privacy settings to restrict who can see your wall, you are also limiting access to your posts that use hashtags.
Inside Facebook explains:
If you have your posts set to friends only (or any other configuration), only those people who are allowed to see it will be able to see your hashtagged post. Clicking on the hashtag will show public posts, as well as posts from your friends who have allowed you to see the post. Privacy settings are respected.
Twitter offers advice for users of hashtags:
Don't #spam #with #hashtags. Don't over-tag a single Tweet. (Best practices recommend using no more than 2 hashtags per Tweet.)
So think strategically when you use hashtags on Facebook. Don't overuse them.