I don't know whether you are right or not about that. However, I do think it's a good idea to be "extremely niche", especially when the size of your market - i

I don't know whether you are right or not about that. However, I do think it's a good idea to be "extremely niche", especially when the size of your market - in this case, people who like watching movies - is very large. I'm sure that a good movie trailer recommendation system would work well on other sites, but those sites may have already moved past the startup/development phase into business-as-usual, where they are trying to squeeze money out of what they currently have without searching for new value propositions. I'm currently working (albeit in a tremendously half-assed way) on a very obvious movie-related idea because I know I can do it better than the big sites and because the market is enormous.