Man, Im not trying to bash you or your credibility but what benefit could you get from getting credits if that feature was actually inspired by your idea? Chris Messina, the inventor of the Hashtag, certainly didnt try to tweet out and humiliate twitter (tweeting out that twitter stole from you def didnt help lmao) for him to be credited. Dont make this like Twitter is obligated to give you credit or even money. Just chill. Email them.