Definitely, there are great uses for emoji... however, I start to wonder if we have waaay to many of them now, and they start to lose their common meaning, leading to confusion between the reader and the author!
@bengy in your case I think the best way to not become so confuse with so many existing emoji or emoticons is to just be selective and choose only those emoji that relates your feelings and thoughts you want to express. Yeah you are right hundreds of new developed emoji are bit annoying. I too sometimes can't get exactly what does or what particular emotion they are expressing :) cheers.