HOW ABOUT THE HASHTAG WORD OR PHRASE ?

"#"Hashtag is used to identify a degital content as concerning a specific topic. Hashtag can be incredibly valuable if it is used strategically,you can use them to expose your content to more people,raise brand awareness,target a specific group of people,boost your search traffic optimization tools and use trending topics to your advantage, among other things. One could be able to track the hashtag engagement through some free tracking websites. Of all these roles the hashtag plays,some experts in such a concern go against the use of the hashtag(#). How about your view.