and then i have same problems if those links are not seen by Google..Do some tier 2 and Tier 3 backlinks Upon your desired backlinks to index them !
Bookmarking can be good , but you don't have to bulk input them upon social media !and then i have same problems if those links are not seen by Google..
i guess nobody has any experience with usefulness of bookmark sites...
if those places are already filled by spam begs the question will google automatically mark them as spam if I publish them there....1. Place your links on a page google frequently crawls