HOW TO MISUSE THE "#".... #You'reDoingItWrong!
Although Chris Messina is notably the "founder" of the hashtag. The answer is no one. The hashtag is an artifact that simply can not be controlled by one single person or entity. It is not a marketing, media, or political object, whose creator thinks it can be created and controlled (Jarvis; 2011). Anyone, well any Twitter user, can willingly use a hashtag without permission or payment.
The hashtag itself is open and profoundly democratic. People gather around a hastag. They can choose to praise or commend it and spread it or choose to ignore it and let it disappear. Twitter users imbue this artifact with their own meaning, meanings that are derived from their own subject position in the world; their economic postion, academic position, athletic position, political position, racial position gender, etc. Each Twitter user brings a different meaning to each hashtag found on Twitter. Thus, the actual creator, or author, of a hashtag quickly and inevitably loses control of it once it is posted for the Twitter world to see.

NEVER:
#describeyourwholetweetinonelonghashtag
Hashtags should be quick, concise, and understandable at a glance. Using one long string of words to describe a tweet is not only annoying, but confusing and ineffective. It takes time to decipher which deters from the meaning of tweeting and including a hashtag in the first place.

#Hashtag #every #word #in #your #tweet.​

This too is an inefective way to hashtag. Laura Devencenzi replies via Facebook, “[I hate] when people break up their sentence and each word has a hashtag. I mean come on man, don’t you realize it’s pointless to hashtag the word #the??? #I #hate #that #so #much" (Macale, Sherilynn).
#TITBDE
Do you know what that means? Of course you don’t. No one does. That’s because it is a nonsensical acronym that no one understands. Some users tend to abbreviate long phrases with acronyms like the above. In this case, our acronym is similar to using one long hashtag in a tweet.

#Twitter #Obama2012 #SuperBowl
In one example, Twitter users will string together a series of popular hashtags in an attempt to be picked up by search and gather more followers. In most cases, the actual tweet has nothing to do with the hashtags being used, and the useless tweet only serves to dilute an otherwise helpful conversation.
WHO OWNS A "#"?
Although Chris Messina is notably the "founder" of the hashtag, The answer is no one. The hashtag is an artifact that simply can not be controlled by one single person or entity. It is not a marketing, media, or political object, whose creator thinks it can be created and controlled (Jarvis; 2011). Anyone, well any Twitter user, can willingly use a hashtag without permission or payment.
The hashtag itself is open and profoundly democratic. People gather around a hastag. They can choose to praise or commend it and spread it or choose to ignore it and let it disappear. Twitter users imbue this artifact with their own meaning, meanings that are derived from their own subject position in the world; their economic postion, academic position, athletic position, political position, racial position gender, etc. Each Twitter user brings a different meaning to each hashtag found on Twitter. Thus, the actual creator, or author, of a hashtag quickly and inevitably loses control of it once it is posted for the Twitter world to see.

The hashtag itself is an important and powerful platform of communication and informational sharing. The hashtag platform allows us to gather around specific events, topics, and actions across or located in other platforms. On Twitter, our conversation is not held hostage by conglomerates or institutions, the hashtag frees us from this. Through hashtags, we hear the voice of millions of Twitter users, unmediated.
Scholar James Carey via Jeff Jarvis explains, "The press does not 'inform' the public. It is 'the public' that ought to inform the press. The true subject matter of journalism is the conversation the public is having with itself" (Jarvis; 2011). The hashtag makes the natural state of the relationship of media to the public possible.

The hashtag was only created a short three years ago. As of today, its power has been undoubtedly limited to Twitter. However, the future will bring opportunities to expand this artifact's use and its empowerment if it is continually supported by other platforms and if it is utilized by Twitter users at the end of their tweets.