This is really just a program
that links all over the internet, grabbing a information from any sites, and then add it to the search
engine indexes. The most important part of the spider is to follow a link from
one page to another, and from one site to another. Google specially relies on
their spiders to create an enormous vast index of listing. Because, the more
times they can find a link to a website, the more times they will view and
visit a website.
The
terms "spider," robots," and "crawler" are just the same. They are used
interchangeably for years to explain the applications that is gathering
valuable information for the internet. When a spider is searching for information,
they artificially inflate traffic statistics. A web server cannot tell the
difference if it is a spider or a person who is requesting for the information.
Spiders, robots, and crawlers are used by many companies just to retrieve any
information regarding a website. Spiders, robots, and crawlers are often
present and are programmed to follow a hyperlink all throughout the internet.
The most well-known users of spiders is Search Engine. It makes up a large number of visits to a well-established website.
The
Google robot, also known as the Googlebot, is the most active. It visits
a website several times a day just to check for any updates. Googlebot is twice
as active as the Yahoo! crawler and six
times more active than the new MSNBot.
Some
companies also use crawlers, robots, and spiders, especially companies that
offer link checking or validation services, and by companies which gather
company information and email addresses for sale. Don't be misled by their
names, because spiders don't visit multiple sites simultaneously from one site to another. The spider only
visits one site then gathers information and links then moves to this new
sites.
