Do you even KNOW what an Otaku is? In Japan they use this term to insult all these annoying fanboys and fangirls who take obsession into something like anime and Videogame.
Don't take me wrong though. I am obessed by anime and videogame to a regular state, however the term Otaku is used to describe all these 30 years old basement dwellers (boys and girls) who never leaves their house, and spend all their money on anime and videogames merchandise and have absolutely no social life whatsoever, It is also used by some japanese to make fun of the Americans Fangirls and Fanboys who are as obsessed by Japan as their own Otaku are obsessed over videogames and anime.
Now here is a little Copypasta from a popular encyclopedia website:
Otaku means "honourable house" and is a very polite term for "you" (with relative strangers); in the fandom sense, it was lightly insulting in Japanese due to the sarcasm involved in using a cold honorific on obsessives who probably don't deserve it (Japanese people are all amnesiacs and require constant reminding of who they are). Originally referring only to train-spotters and the like, the "house" part has caused it to drift into also being used as a heavily derogatory term for geeks who don't leave their houses. It is generally written only in katakana, to distinguish it from the non-derogatory use of the word, and to emphasize the fact that only stupid foreigners would ever take pride in such a label.
I'm making this topic for the sole purpose that it annoy me to see all these peoples calling themselves otaku when they don't know what that means, I'm not trying to make fun of anyone or be evil. I'm only saying that by calling yourself an otaku, you are making fun of yourself and if you were to use this term in Japan to refer yourself as an anime fan then you ARE insulting yourself.
Be careful and use the term "fan" rather than Otaku. Otaku is amean thing.