Google cutting off the ad revenue from tasting won't change anything because few people taste domains for the revenue. You taste a domain name to see if it has traffic. If it has enough traffic to justify a $6.50 registration, you register it. If you're uncertain, you taste it again and again to get a larger sample size. If it doesn't have traffic, you let it drop. Domainers may monetize their temporary registrations as a way to get some extra revenue, but that extra revenue is just a nice bonus; it's not the primary reason anyone tastes a name. -- Bret
According to Jay Westerdal at Domain Tools, Google would block all domains if they are less then five days old. In Jay's words, "This potential new policy change by Google could stop all Domain Tasting in its tracks."