Hi friends! I will want start authority site, but stuck for step choose niche. I can't understand criterias for choose keywords. How I do this now: 1) Find kw1 with 30000+ searches 2) Find relevant kw for kw1 with 1000 - 10000 searches 3) Check kw in MOZ for PA and backlink Question: 1) What value PA and quantity backlink, say about low competition? 2) What criteria has to pay attention? It would be great to get more advice on choosing a niche for authority site. Thanks.