OK here we go: 1. Article Submissions - Google dumped all article submission site some years back. Article submission will not help your ranking 2. Blog Commenting - almost all blog comments are no follow so will not help your ranking 3. Guest Blogging - Has been spammed to death and is mostly ignored by Google. 4. Profile Creation - Self generated content so has virtually no value. If you read the Google blogs and webmaster guidance it tells you this. If you want to do link building PBNs still work but take a lot of effort to manage. You can find related sites, build a relationship, gain trust and do some collaborative work. These links have value. You can become a recognised expert in your field, publish academic studies and you will get referral links and citations. In other works. if you want links you need to be authoritative, trustworthy and add value. It's not easy.