Websites can be often connected together with links. Multiple types of links exist.
Reciprocal links are a special kind of web site association. They connect two websites together. The unique thing about reciprocal links is that the first site contains a link to the second while the second one is also linked to the first site.
The reciprocal link does not have as much weight as one-way links in PageRank. Therefore 3-way links are often used instead.
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