Local search is a search engine that allows for geographically constrained searching
The query includes not only information about "what" the site visitor is searching for (such as keywords, a business category, or the name of a consumer product) but also "where" information, such as a street address , city name , postal code , or geographic coordinates like latitude and longitude.
If your site targets users in a particular geographic location, you can use our geographic target tool to provide us with information that will help us determine how your site appears in our country-specific search results, and also improve our search results for geographic queries.
For example, say a dentist is looking for information on ceramics, a common material used in dental work. If the dentist performs a Google search on the keyword "ceramics", Google will serve up millions of results, but most of the entries on the first few pages will concern hobbies like pottery. On the other hand, if the dentist performs the same search on DentalProducts.net, a well-regarded media company Web site, it will return much more relevant results.
One-way links are links to your site from sites which do not receive a link from your site. One-way links are wonderful things to have because they increase your link popularity - the number of pages linking to your site. Search engines such as Google place huge importance on link popularity when ranking your site.
Web Directory is not a search engine, and does not display lists of web pages based on keywords, instead it lists web sites by category and subcategory. (society & culture, business & financial services)
Examples of well known, general, web directories are Yahoo! Directory and the Open Directory Project (ODP)
The Open Directory Project (ODP), also known as Dmoz (from directory.mozilla.org, its original domain name)
A reciprocal link is a mutual link between two objects, commonly between two websites in order to ensure mutual traffic. Reciprocal links make permanent back links for the Both Websites. The Output Reciprocal link is
Three way linking (siteA -> siteB -> siteC -> siteA) is a special type of reciprocal linking. The attempt of this link building method is to create more "natural" links in the eyes of search engines. The value of links by three-way linking can then be better than normal reciprocal links, which are usually done between two domains.
Multi way linking is a technique used for website promotion whereby websites may create similar one way links that each involve 3 or more partner sites. This provides each website with a one way non-reciprocal link.