How do I use hashtags?
Hashtags turn topics and phrases into clickable links in your posts on your favorite social networks like Twitter, Facebook as well as Stumbleupon and Google+ Timeline or Page. This helps people find posts about topics they’re interested in. To make a hashtag, write # (the number sign) along with a topic or phrase and add it to your post. For example:
I just saw the cutest puppy! #dogs
When you click a hashtag, you’ll see a feed of posts that include that hashtag. You may also see some related hashtags at the top of the page.
Please keep in mind:
A hashtag must be written as a single word, without any spaces
You can include numbers in a hashtag, but punctuation and special characters (like $ and %) won’t work
You can search for a hashtag using the search bar at the top of any page
You’ll only see posts that were shared with you
Learn more about who can see your posts when you use hashtags.
Note: The hashtag feature isn’t available to everyone right now.