Alexa revamps ranking system

The much-maligned, not always accurate Alexa ranking system has been revamped according to TechCrunch – mixing in more data source than just the Alexa toolbar. Alexa isn’t saying what exactly that secret formula is – but some of the searched I run on the site seem to be slightly more in-line with reality. The bottom line is that there still isn’t an accurate way to compare sites and get a good read on traffic – not even the professional services like those offered by Nielsen.