Playing on Apple's past "Switch" ad campaign, which was aimed at getting Windows users to migrate to Apple's Mac OS X-based computers, a few longtime Mac and open-source gurus are vocally publicizing <A HREF="http://www.eweek.com/article2/0,1895,1980616,00.asp?kc=ewnws062306dtx1k0000599">their switch away from Apple's platform</A> to more open-source solutions. Though the practical impact is impossible to gauge, their arguments have been making waves.