social bookmarking and comment posting backlinks

These are the following social bookmarking and comment posting do follow backlinks.
http://ttlink.com/caroli
http://yoomark.com/content/briefly-explanation-benefits-academic-writing-services-how-it-could-be-helpful-you-academic
http://www.4mark.net/story/850751/best-way-to-achieve-high-grades-in-academic-career
https://diigo.com/0ff6kb
https://www.pearltrees.com/carolinekaylee121#item264734487
http://bookmarkingbase.com/article/199810/1842/How-Can-You-Benefit-From-Academic-Writing-Services-
https://list.ly/list/3LcN-academic-writing-services?make_list_mode=true
https://public.bookmax.net/users/carolinekhan766/bookmarks
http://public.sitejot.com/emma0120.html
http://revistes.iec.cat/index.php/ASCF/comment/view/2093/0/22721
https://ojs.bib.hb.se/mastern/comment/view/26/0/38617
https://community.autism.org.uk/f/health-and-wellbeing/16428/insensitive-medical-professionals
https://community.umidigi.com/portal.php?mod=comment&id=157&idtype=aid
http://www.bigfishtackle.com/photos/showphoto.php?photo=19586
https://open-banking-sandbox.developer.eu.apiconnect.ibmcloud.com/comment/222#comment-222
http://rvq-sub.sbq.org.br/index.php/rvq/comment/view/644/0/83072