What niches are the best?

[Sarah_Jayne]

It does sound cliché but it really is true that the ones you are most interested in will be the best for you. That doesn't mean they have to turn you on. I do a lot of fetish sites and I don't actually have a fetish myself BUT I am interested by them and therefore my work is interesting as I try to unravel them, so to speak.

I would say, pick one or two broad niches and then work hard to break them down into whatever micro-niches you can in those broad niches and 'own' the niches as best you can.