Rocketboom was static for awhile and has been on a steady upward incline all year. Why is Alexa showing a sharp downward trend?
I just spent about an hour searching the net on Alexa and all I could find were stories of people telling others to install the toolbar so they could increase their own ranking. I did find that Vista considers Alexa malware and there is no planned support for Firefox or Safari.
Dembot: The Death of Alexa’s Toolbar