This overview synthesizes practitioner research, Google guidance, and industry studies to compare link-building dynamics in large English-speaking markets (e.g., US/UK) versus smaller non-English-speaking markets (e.g., Sweden/Norway). Foundational work by Brin & Page (1998) established PageRank as a core ranking mechanism, while later studies (TrustRank, 2004; Web Spam Taxonomy, 2005) emphasized the risks of manipulation. Google’s own policies (Google, 2023; Illyes, 2023) confirm that links remain a ranking signal but are no longer among the top three signals. (A statement that is largely questioned by the industry). Industry studies (Perficient, 2023; Ahrefs, 2023, 2025) find measurable associations between link measures and rankings. Nordic research (Karlsson et al., 2015; Sjøvaag et al., 2019) shows a weak external linking culture, which affects digital PR and link bait effectiveness.