Facebook displays related hashtags

Facebook seems to invest on the use of hashtags and they seem to improve their usefulness day by day, making the lives of social media managers easier.

I was searching for a hashtag yesterday when I noticed that on top of the page there were suggestions for similar tags to the one I was searching. This means that when you're monitoring a specific hashtag you can find useful suggestions with a targeted content for your needs. This is a time-saving feature for social media managers that might want to search for several hashtags, in order to decide which one they should keep for each brand.

Have you used hashtags on Facebook? Do you find them useful?