Before we move on to looking at the best hashtags to use in your giveaways, let’s look at Facebook hashtags. Hashtags on Facebook don’t seem to be as popular as they are on other social networks, so you might be wondering if it’s worth using them at all. In our opinion, there’s not much point in using hashtags on Facebook if you’re using your personal profile because most of them are private. And private profile hashtags won’t show up in Facebook’s search results which defeats the goal of using hashtags to raise awareness and engagement.