I am doing some research on the search advertising industry and was curious about What do you think about Yahoo and Google's handling of click fraud? When do you decide to run a campaign on just one platform vs. multiple platforms? What do the major search engines do well that gets you to spend more on search advertising? Did any of you participate in the Google Pay-Per-Action test? Any thoughts on why they shut it down? We all know the stories about Google products that go from an idea to a beta in 6 weeks. But, how do they manage their larger initiatives (i.e. Android, Open Social)? Do they use a traditional product development process in terms of assigning resources, etc.? Do you use the client provided API’s? If not, what other tools do you use and what functions do they provide to help you?