March 2007 Google SERP change has deemed my empire ineffective. Can't wait for the next shift! Roller coaster ride, indeed. Anyone else feel like regulation (good or bad) is right around the corner? Too much mystery, non-accountability, and guesswork for a revenue center of this size. How about Google's PPA beta launching? Are they on a crash course with anti-trust issues a la Ma Bell & Mikro$opht?