I am doing a high quality link on tier 1 and gsa blast on tier 2 Many people don't seem to be expanding their hierarchy to tier three. What do you think of your opinion?
Many people do expand their backlinks to tier 3 and sometimes tier 4. (I personally do) It all depends on each once campaigns. when I create tier 3 and tier 4 campaigns, I find that it helps the websites to maintain the positions in SERPs.
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