Question for you about Alexa. I use it but from my own research it sounded like it was not very accurate for sites with a score above 100k. My site is currently sitting at 330k and Alexa shows my traffic being higher than some sites I know through other tools are getting much more traffic than I am.

My understanding is Alexa does not crawl the internet but instead relies on users collecting the data through the plugin. This means that if you have Alexa and you visit your own site a lot then it will rank higher than a site that does not get as many visitors from users using Alexa.

But larger sites tend to have enough traffic that their Alexa scores work out since enough users with the plugin are visiting.

Am I way off on my understanding? I would love to get your thoughts on this. I see people using Alexa a lot and I have always wondered if I'm missing something.