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legacy data
Referring to information contained in old file types. Usually legacy data can only be viewed with special reader programs.

A typical MWR, mostly referring to a potential customer's contact details. Many companies don't sell online but rather use their sites to generate leads that are then followed up. Many affiliate programs also reward affiliates on a per-lead basis rather than a per-sale basis.

link / hyperlink
Clickable content on a web page usually leads to another page, another site or another part of the same page. The clickable content therefore is said to link to the other page / site / part of the same page. Spiders use links to crawl from one page to the next as they index web sites.

linkable content
Site content that is so high quality and/or unique that other sites *can't resist* linking to it. Examples include articles, news, forums, newsletters, etc.

See link popularity

link checker / link validator
A program that scans web sites for dead links. Most link checkers generate reports that list all dead links on a site.

link farm
Similar to FFA pages, it refers to a page where anyone can list a web site to be linked to. Link farms are used to artificially boost link popularity. Most search engines penalize sites associated with link farms.
Also see FFA

link hoarding
The practice of getting as many inbound links as possible while giving as few outbound links as possible. This is done in attempt to increase link popularity. Regarded as spam.

link popularity / linkage
A measure of the quantity and quality of inbound links. Link popularity is an important factor in SEO. For more on its role in SEO as well as legitimate ways to improve a site's link popularity, please refer to the Search Engine Yearbook.

Similar to dead links, but more specifically referring to the general problem of dead links on the web. Linkrot is a major headache for the search engines who has to return relevant and up-to-date results.

link swap / link swop
Similar to reciprocal links, referring to the practice of two or more sites exchanging links in an effort to boost link popularity. For more on this and other ways to boost link popularity, please refer to the Search Engine Yearbook.

link text
See anchor text.

link tracking
A type of indexing designed to track inbound links to a document. Many search engines offer ways to easily track inbound links. At Google, for example, simply type "link:www.your-domain-here.com" (without the quotation marks) for a list of sites linking to www.your-domain-here.com.

log file
Each web site has a log file (stored on the server), which records details every time a visitor to the site requests a file. Log files store data such as the IP address of the visitor, the visitor's nationality, operating system, browser etc. The log file can be analyzed to obtain statistics on unique visitors, page views, hits etc., which are often used as measurements in SEO.
Also see log file analysis.

log file analysis
Referring to the analysis of records stored in the log file. In its raw format, the data in the log files can be hard to read and overwhelming. There are numerous log file analyzers that convert log file data into user-friendly charts and graphs. A good analyzer is generally considered an essential tool in SEO because it can show search engine statistics such as the number of visitors received from each search engine, the keywords each visitors used to find the site, visits by search engine spiders etc. For more on log file analysis and analyzers, please refer to the Search Engine Yearbook.

logspam / logspamming
A type of spamdexing where one website gives another website enough fake hits so as to get into their top referrer logs and obtain backlinks. Most often done to high PageRank sites with publicly available site useage logs that are spidered by Google.

Additional information:
It seems that Google is aware of this practice and will penalize sites that obtain backlinks in this way.

A comparatively small directory. For a complete review of Looksmart and its PPC model, please refer to the Search Engine Yearbook.

Lycos started out as a search engine and was very highly rated in the late 90's. Today, web search remains one of its features, but there has been a shift of focus to become a more general portal site with features like e-mail, personalization etc. Please refer to the Search Engine Yearbook for a more detailed look at Lycos, how it works and its importance in SEO.


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