Although Alexa’s search results are driven by Google, this is a definite must in your search engine marketing plan.
The reason is that Alexa will provide statistics about your website that no other search engine or web directory will provide.
These statistics include:
*your site ranking on the internet *what sites are linking to yours *Detailed traffic statistics *Site thumbnails *Site Speed
these are just a few examples.
You can also use Alexa to search for your keywords. This will tell you who your competition is for the keywords you have selected. You can more carefully study your competition, find out who is linking to your competition, and use what you learn to raise your rankings in the search engines, …