Google Goes Las Vegas from Robert X. Cringely at PBS looks at the anecdote of someone who was paying $0.10 per ad to promote his site and then tried to test new ideas with a different site, coming away perplexed about why paying more for the second site generated LESS traffic. Are things rigged, Cringley asks?

The person he writes about decided to try testing ideas on getting better results with an entirely new web site. When he created ads for this site -- using the same terms as the old site -- he was told he had to pay $1.00 per click.

Read more about this Adwords marketing experiment at http://blog.searchenginewatch.com/blog/050926-092356.