I think I found a killer niche. It has a broad scope of topics that can be written about, people has obvious interest in this niche a there are many places to get ideas from. In the last 3 days I have made 65 posts. They are not huge posts 2-3 para at best about ~100 words per post. Should I be worried about Google black listing me for writing too often? The contents may not be unique, but they almost always have unique title and most definitely unique content. basically rewriting the same things written in many other places but with my own style that is good enough to differentiate from other similar contents.