Alexa排名英文介紹

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Alexa's popularity has been growing by leaps and bounds over the last several years and none of it would be possible without the Alexa Toolbar. Good reasons to install the Alexa Toolbar:
    The toolbar provides quick and easy access to the data that you expect from Alexa, including rankings, related links and more.
    You can help improve the data by installing the toolbar. The more people use it, the better it gets.
    Alexa is free.
    Alexa is a community of users improving the Web for everybody. Just by using the Alexa Toolbar you are ensuring that everybody has access to a free and impartial source of traffic information. If you don't have the toolbar already, what are you waiting for?
    The new toolbar, version 7.1, is a minor revision that includes some design improvements as well as one nifty new feature... it automatically shows a red or green arrow indicating whether the site's traffic rank is improving or declining.
    For those of you that already have an Alexa Toolbar installed, thank you. Your Alexa Toolbar should auto-update within the next week or so.
    通過以上的英文介紹,我們了解到Alexa是一家專門發(fā)布網(wǎng)站世界排名的網(wǎng)站。以搜索引擎起家的Alexa創(chuàng)建于1996年4月,目的是讓互聯(lián)網(wǎng)網(wǎng)友在分享虛擬世界資源的同時(shí),更多地參與互聯(lián)網(wǎng)資源的組織。2002年5月Alexa放棄了自己的搜索引擎轉(zhuǎn)而與Google合作。Alexa每天在網(wǎng)上搜集超過1,000GB的信息,然后進(jìn)行整合發(fā)布,現(xiàn)在他搜集的URL數(shù)量已經(jīng)超過了Google。下圖是他們自己給出的一個(gè)信息量比較圖。縱軸為已有的URL地址數(shù)量,以十億為單位。也就是說在量上,Alexa位居世界四大搜索引擎第一位,已超過35億。