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E-Commerce - Electronic Commerce
ECommerce is a catch-all term for trading via electronic telecommunications such as the Internet or WAP.
It is commonly used more specifically to describe the process by which a website accepts payments, either using a gateway such
as PayPal or WorldPay, or directly through it's own payment system.
EGMS Meta Data
eGMS is a system of Meta tags used by UK Government and quango organisations. It is actually a sub-set of the Dublin Core Meta tag specification.
EMR
A search result that precisely matches a user's search term.
EPC
Earnings Per Click. A unit of measure used to determine a site's ability to convert visitors into customers. Calculated by dividing total sales amount by total page views
EPV
Earnings Per Visitor. A unit of measure used to determine a site's ability to convert visitors into customers. Calculated by dividing total sales amount by total number of visitors to the site.
Error Document
The page that is served if there is an error in processing an HTTP request.
There are different error documents served depending on the kind of error that occured.
Everflux
Once a month Google updates its entire index of web sites. That is called the Google Dance and can last for a couple of days – usually it’s from about the 20th to the 28th of every month.
Around June/July 2002 we started seeing something else though. Google results started changing all through the month, in between the major updates. This continuous change became known as everflux.
It happens because Google, in an ongoing effort to make their results as relevant as possible, has introduced a “fresh crawl” that runs each day. The idea behind the fresh crawl is to
update pages that change regularly. This allows Google to serve results that are up-to-date with current events.
Exact match
If not for partial matching, fuzzy matching, collaborative filtering and stemming, search engines would only return exact matches.
A search for "power" would only return documents containing the exact term, not documents containing variations or related terms like powerful, strength etc.
Expert document
A document that links to many other (same-topic) documents. Some search engines only consider links from expert documents - as opposed to all documents
in the collection - when determining link popularity. According to the Hilltop paper, expert documents are "pages that have been created with the specific
purpose of directing people towards resources".
Expert index
A special sub-collection within a search engine index. An expert index consists only of documents that are considered expert documents.
Eye candy
Aesthetically pleasing web sites are said to provide eye-candy. The term is used to describe sites both positively and negatively.
In the context of search engines and SEO, eye candy is generally perceived as unnecessary, not contributing to the marketing effort.
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