Alexa Internet was established in 1996 by Brewster kahle and
Bruce Gilliat . alexa.com is controlled by the amazon.com .
alexa.com evaluating the number of visits on various Web sites and
provides the rank for your sites and blogs . it has a own algorithm to
calculate the sites ranking . alexa told that if some visitor visits the same
page more times in a day , Than it will calculate all those visit as single one .
alexa toolbar is supported by the most of the Web browser .
you can create a your own alexa toolbar according your
choice and install to Web sites and blogs .