It was initially flagged by techcrunch about a week ago. At the time it was struggling under the onslaught of being highlighted both on techcrunch and elsewhere. A few days later seomoz brought to my attention that the load had got so bad that the creator felt unable to cope and had released the source code to the community. There are now 13 mirrors you can use including Italian, German, Bulgarian, French and Dutch versions.
Despite this there are some real insights to be had for anyone interested in scraping these sorts of stats. For instance a stunningly simple method to grab the alexa rank is used which I hadn't come across before. It doesn't involve paying to access the API and you don't need to wrestle a css file into submission to extract the rank from the alexa site.
The alexa data is returned in file number 7. Just in case you're not overly thrilled by the notion of opening all 46 files to find the one that accesses the service you're particularly interested in there is a useful key in the following file - js/general_without_encryption.js