Inside Pool has used their Alexa rating for months to claim that they have higher traffic than AzB. Any webmaster who knows his business at all knows that Alexa's ratings are extremely easily manipulated and most professionals consider those rankings worthless.
Check out some of the threads on various webmastering forums....
http://www.sitepoint.com/forums/showthread.php?t=153286
http://www.sitepoint.com/forums/showthread.php?t=156775
http://www.webproworld.com/viewtopic.php?t=4562
http://www.webproworld.com/viewtopic.php?t=36045
And some interesting quotes...
"Based on what I have seen - using Alexa to estimate site traffic is a worse alternative to guessing"
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"In my industry, there is one GINORMOUS Web site that at the height of the Internet boom got millions of dollars in venture capital (site A). The site currently gets a crapload of traffic. It's not unusal for the forums to have 2000 users online at the busiest time of the day.
So somehow this other little site (site B) gets a real high Alexa ranking - way higher than site A. Site B might have 150 users online when site A has 2000, but Site B ranks WAY higher on Alexa.
The result? Site B gets cocky and combines the Alexa ranking with some BS bloated statistics in their media kit - and voila - the Webs biggest site in the industry is born out of smoke and mirrors. Its a discredit to all of us other sites that are trying to build businesses in this niche."
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"I wouldn't worry about the Alexa ranking. My experience has mirrored what alot of others here have said...in that it is almost completely useless.
It never brought me one customer, made one sale for me, increased my traffic, or anything else that matters. Just something to consider..."
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"I should also point out that PestPatrol (Alexa voted #1 pest at PestPatrol) and Adaware consider Alexa spyware/adware because it records things that you do. It will even record text entered into web forms including usernames and passwords if it becomes part of the URL. Hmmm.... "
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"Using Alexa?? You've got to be kidding. Any analysis of the Alexa stats are about as useful as tarot cards or a ouija board for getting traffic numbers.
It's unbelievable when people talk about using Alexa for anything other then a punchline. You lose all credibility as soon as you mention Alexa unless you preface it with "have you heard this one before..."."
There are a wide variety of tools and tricks out there on the net to artificially boost your Alexa rankings....
fakerank and alexabooster are two of the more widely used programs for this.
There are also threads on many of the webmastering forums that explain how to manipulate the Alexa rankings without any additional software/.
Here is an interesting link to a site that did a study on the Alexa rankings as compared to their real traffic #s.
http://www.mediacollege.com/internet/utilities/alexa/
Now I am not saying that anyone at Insidepool.com would ever stoop so low as to artificially manipulate their Alexa stats in order to claim their site was the highest trafficked on the net. Former employees have admitted that they were asked to go to bizrate and fill out fake reviews of the site saying it was a great buying experience, but certainly they would not do something like manipulating their Alexa ranking.
Mike