I don't know it it's right, but sounds reasonable:
"We all know that Alexa ranks you based on how much traffic comes to your website. Search engines take Alexa rank into consideration when they rank you. The higher your Alexa rank, the higher your search engine rank."
This part is really interesting - "
Search engines take Alexa rank into consideration when they rank you. The higher your Alexa rank, the higher your search engine rank."
I saw it here:
http://affiliatesupportdesk.com/