Three-way linking (siteA>siteB>siteC>siteA) is a more effective type of reciprocal linking. The intent of this method of link building is to create more “natural” links identifiable by search engines. There is more value in three-way linking than ordinary reciprocal links, which are usually done between two domains.
Multi way linking is a method utilized for the promotion of websites whereby websites create similar one way links that involve three or more partnering sites. This provides each website with a one way non-reciprocal link. Google and Yahoo’s latest search algorithms have evolved to the point where they favor websites that maintain a high level of incoming non-reciprocating (one way links) as opposed to websites that contain a high percentage of reciprocated links. Multi way refers to the fact that the link exchange is between three or more websites, however each link is singular by pointing to one other website. Other methods of linking that may increase your web presence may also include other indirect methods such as content, videos, loading images or RSS feeds from a third partners website.
Link campaigns are a variant form of online marketing and SEO. An organization endeavoring to increase the number of visitor to its web site can request that its strategic partners, professional organizations, chambers of commerce, suppliers and customers to add links from their web sites. A link campaign may involve mutual links back and forth between related sites, but does not require the reciprocation of links.
Forum signature linking is a method used to build backlinks to a website. This process entails using forum communities that allow outbound hyperlinks in their member’s signature. This can be an extremely fast way to build up inbound links to a website; it has the ability to produce targeted traffic if the website is relevant to the forum topic. It should be stated that forums utilizing the nofollow attribute will have no actual Search Engine Optimization value.