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Hi, I post 2 interesting articles every week on my website's blog. 
I post about them on Tw, Fb, G+, Ln. What else is recommend (wrt to blogging & otherwise too) to improve SERP and organic traffic?
Somehow I feel this is not good enough. Somehow guest blogging is not working out, tried a couple of times. I am a bit lost here, need some pointers. Thank you in advance. Best regards,
Vai

Hi I was analyzing my sites's backlinks and see a lot of the domains are not indexed by google.
I assume google has unindexed them - may be these domains are penalized. Should I request removal of my site's link from these pages ? What is the recommended approach in such a case? Thank you for your inputs.