Use Quantcast instead. It's not %100 percent accurate but it's much more accurate then that crap we mentioned up above. If you read GGurls' Quantcast rankings it shows a much better reading on how much traffic we really get (still somewhat off but much better). It shows we're the biggest in our niche (which we already knew) and it's much more reliable. Quantcast traffic is directly measured. So once again, FUCK ALEXA RANKINGS.
The absolute best rankings you'll get from your website is Awstats thats on your Cpanel