Best Site To Watch Horror Movies Online?

Hello Guys. I am looking for a website where I can see the upcoming movie trailers in best quality at its earliest. At my own I have searched a lot but found nothing yet. So, I need your help if anyone can suggest me any reference.

YouTube.

Is that a new site? Explain to me what a YouTube is.

Hello Yoda. I already know about Youtube but the problem is, in youtube it's very difficult to find movie by actor, director or year. Also, sometimes movie title is not matching with video. That's why I asking for other site. If you know about any other site, Please share.