Alexa Ranking Accuracy

Maybe someone can shed light here. This blog gets about 200 to 300 visitors a day (thank you everyone). It has a current Alexa ranking of 205,000. However, another site of mine gets about 500 to 700 visitors a day and is only ranked 214,000 by Alexa.

What gives? Is it because more visitors who visit my blog have Alexa installed than the visitors who visit the other site? That’s the only thing I can think of.

If someone else has a site that’s kind of close on Alexa ranking can weigh in with their traffic numbers, that would be nice.

Or just weigh in, period. 🙂