So Schoemaker says he sets his web pages to automatically display legitimate content to the Googlespider, while giving other users the ad-filled arbitrage page.
That's not a problem, Koppula says, because supplemental results are no less legitimate than normal results, and pages in the supplemental index aren't checked any less frequently by Google's spider.
Asked if the supplemental index is getting bigger, he responds that "new pages are constantly being added, " but that the "algorithmic nature" of Google's spider makes it hard to measure the index's size or how fast it's growing.