Alexa is great tool specially for webmasters to find global traffic rank of any website. Its a part of Amazon and many publishers sell their Ads by showing their traffic ranks.
But what to do When you wants to update or edit your site stats information on Alexa?
It allows you to add your contact information and other useful details. You first need to register yourself. You can also login using Facebook account.
Q. Another question is Someone added hated or negative reviews or feedback for my site on Alexa (common question asked on many forums before) ?
The answer is their Help Forum. Post your new topic about your problems and someone from their team will definitely reply to it (generally Alberto).
Q. Another question is Can we manipulate or cheat Alexa rank?
Q. My site has not been indexed by Alexa. What should I do?
As soon as you search for your site or generate some backlinks then it is directly added to their crawl list but you can also submit your URL and they take around 3 weeks time.
Also read Show Traffic rank and Site review widget.

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sometimes having Alexa toolbar fools the tracker
It happens many times
i didnt confront any problem in alexa…
@Techno Good to hear this.
I lost the link to and rank after domain change? …oh no…