This is niche research series for content locker. I will find niche market and niche market series (How to, game, movie, general niche or passion) for you create content locker and post it in this blog . In this post, I post general niche about how to niche episode 4. If you want to find depth keyword and what people searching about niche. I highly recommended long tail pro for you can create content . In how to niche, you can create solve problem such as premium article, ebooks or video.