When tracking attendance of the websites the concept "unique visitor" is always applied. It is special unit which is used by the specialists wishing to evaluate popularity of the resource.
The unique visitor (he is also called the visitor about unique the IP address) is the person who visited the website for a certain period. If in the same interval he visits a resource once again, then as unique will not be considered.
However this concept has important features. The unique visitor call that user who visited the site from the specific computer having the IP address. If you sit down at other computer and will come on the same resource, then your visit will be considered as unique again.
In addition, not only the person can be the visitor. Search robots, spam bots, programs imitating the real user — their visits are also recognized as unique. Speaking about simulating, specialists mean those data which are taken into account the counters installed on the website: IP address, traffic source, browser, etc.
Counters (Yandex. The metrics, Google Analytics) define number of unique visitors and also their behavior: the number of the viewed pages, the sequence of this viewing, stay time on the website and other indicators.
Why to the website unique visitors?
The quantity of the websites on the Internet is huge, however they can be divided by purpose. Some resources become for people and provide them useful information, and others are designed to bring earnings to the owners. But anyway the unique visitor will bring to the owner of the website huge benefit: the advertisers selecting sites for promotion of the services pay attention to attendance.
In the sphere of Internet advertizing the number of unique visitors of the website on which such advertizing is planned to be placed is especially appreciated. The logic is simple: the more at a resource, the probability is higher than real visitors that they will be interested in an advertisement.
How to attract unique visitors?
This problem can be solved by honest or "gray" methods. In the first case the advance of the website on search and social networks is conducted, its contextual advertizing will be organized. Generally, any honest method to draw attention of users can be applied.
The "grey" way consists in artificial wrapping of number of unique visitors. It is possible to increase an indicator by a program method or by means of the systems of active advertizing. Attendance of the website will nominally increase, however the real interest in it will not be increased. Therefore specialists recommend to abstain from similar methods of work.