An optimised page submitted to search engines in order to rank high for very specific keywords. With the rise of link popularity as an integral part in ranking algorithms, this technique has become redundant. Such practice is considered spam by some search engines.
Google -
The largest and most popular internet search engine.
Google Everflux -
An anomaly by which pages can quickly appear and then
disappear in Google page rankings. Usually occurs to newly added web pages.
Google Sandbox Effect -
To discourage spammers from trying to manipulate search engine rankings, Google puts new sites in a "tank" until they have proven their viability to exist for more than a period of "x" months. The usual holding period seems to be between 4 and 8 months before a site starts appearing in Google's search results.