Need Help for Alexa Ranking

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I don't personally think Alexa has their own link juice like Google does. For this reason, Alexa can only measure traffic if someone visits a Alexa registered page, and that visitor has the Alexa toolbar installed. Although Alexa does detect Googles pagerank. Alexa is more about total traffic. I also have to keep in mind that a small percentage of people hit my pages with the Alexa toolbar installed. Based on percentages, I then calculate a better traffic number.

I will also say this, I put a PR9 Dofollow backlink to the Alexa page of each site I work on. I know Google crawls PR9 sites very frequently. This makes it very easy for Google to see the Alexa rankings for my websites frequently.