I don't recommend it for Tier 1, use it only for Tier2, Tier3 link building. It's spammed to death so don't link it directly. 1. strategicplanning.dartmouth.edu Go here: http://strategicplanning.dartmouth....-future/where-can-we-strengthen-collaboration Wait a minute for a page to load, scroll down and make a comment. 2. ift.edu.mo Go here: https://www.ift.edu.mo/index/masterchef-s-graham-elliot-inspires-ift-students Wait a minute for a page to load, scroll down and make a comment. 3. learn.smc.edu.ng Example: http://learn.smc.edu.ng/members/reams2139/ Simply Sign Up and add your website in the profile section. 4. bdkh.mpi.gov.vn Go here: http://bdkh.mpi.gov.vn/en/Communica...tainerSrc=[G]Containers/_default/No+Container Scroll to the end and you will see an option "Click here to make a comment" 5. sisp.gov.br Go here: http://sisp.gov.br/web/one-entry?entry_id=18057670 Wait a minute for a page to load, scroll down and click on "Adicionar comentário". - Not sure if this one still works.