In the early days of SEO it was all about high PageRank links with perfect anchor text.
Black hat SEO practitioners would link SPAM the crap out of guestbooks, forums and blogs, basically anywhere a clickable link could be added, black hat SEO’s would be spamming their links.
In some respects not a lot has changed in 2019, black hats still SPAM the crap out of anywhere they can get a link, BUT the black hat technique no longer works. Link SPAMMING no longer results in high Google rankings, in fact it’s more likely to result in a domain being downgraded or completely banned by Google!
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