There are still many out there that look at Alexa for popularity figures. But as most of you know, the figures are pretty poor estimates of actual popularity and traffic rank.
A DigitalPoint Forum thread named Shock for Alexa Lovers goes through varies methods to inflate your alexa ranking. Some may work, some may not.
(1) Forum member ebusinesstutor offered an "ethical" method of asking your Web visitors via newsletter to download the Alexa toolbar. This way when they visit you, they will help inflate your web ranking.
(2) I know many who have their employees download the toolbar on all their browsers and constantly visit the sites over and over again.
(5) that may help inflate your Alexa rankings.