To pick out a unique hashtag, you need to know your audience first. The hashtag can’t be something too broad, and it can’t be too obscure. You should be able to tell what kind of an idea or a brand it represents, yet not be too bland and lack personality. It should cater to your specific niche, but it should be flexible enough to take advantage of connecting to a trending topic as well. It’s best to go with a short, catchy phrase. The hashtag should never be ambiguous, and always be accurate in its description of the brand.