I've written before that we'll see a move away from bidding on keywords in favor of paying for leads, regardless of the terms used by those leads/searchers to find us. Now Overture says it's something they are considering: flat rate pricing to make search easier for small and medium sized businesses. More from this ClickZ article, Yahoo!'s Overture Looks At Simpler Models to Court Advertisers.
I can see that coming -- just as I can see flat rate pricing making life easier for big advertisers, as well. If you're Nike, and you want to be tops for shoes, writing a big giant check for guaranteed top placement makes a lot more sense that trying to manage thousands of keywords. It'll come.
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.