backlink-roi
Backlink Valuation Without Guesswork: The Six Principles Behind BV
BV, the Backlink Value model behind bklink audits and mxverify's site reports, puts a dollar figure on what one link is worth to rankings. This post sets out the six principles that make that figure defensible: a formula from site strength rather than a price list, four levels of link, the site's own nofollow ratio, topical relevance, organic traffic only, and provenance on every number.