Here are the results of my back-linking journey I am not into SEO. I read a lot here on that ,so I learnt few basics. I have few domains in the sane niche and this is what I did: - I bought back-links of different kinds from different providers. I bought from around 20 providers . I checked their feed backs and that made me order from them. All are from BHW and Fever. I did this for one domain only. The total number o backlinks is around 20k. Yes, I know you would say these are shit back-links. Well, not all to be honest. I bought gust posts . back-links on famous domains...etc - For the other domains, I just built few backlinks ( 3-4 for each). Just very simple back-links. I also linked them to each other. The main domain is more than one year old. The other domains are more than six months old but less than a year. Results : - After one year, the main domain has 1 Domain Authority. Yes. Only one . - The other domains have between 8 and 19 domain authority. How can this happen? I will not search the reason. I learnt my lesson and will only make my own back-links. Period.