What is more effective......?

[Davidvinot]

Backlinks to High PR 1 + Blog Comments, Social media network.

 

[Random Rank]

All of the SEO tricks are useful you can not choose one. they all work really well.

 

[Jackson Soo]

Backlinks to High PR 1 + Blog Comments, Social media network.

Are you sure PR1 is adequate for backlinking? Higher page rank sites are considered authority by Google.

 

[Arsis]

Manual Tier 1 links with unique content... no software
Spammy software Tier 2 links..

Don't overoptimize your onpage or offpage.. keep your exact anchor text you're tryin to rank down to 10-15%.. Good luck