Newcastle Web Design.

A few Adwords publishers have supposedly received an offer to participate in a new Automatic Matching Feature;

Automatic Matching automatically extends your campaign's reach by using surplus budget to serve your ads on relevant search queries that are not already triggered by your keyword lists. By analyzing the structure and content of your website and AdWords campaigns, we deliver more impressions and clicks while maintaining your current CTRs and CPCs.

For example, If you sold Nike T-shirts on your website, the auto matching would automatically crawl your landing pages and target your adwords campaigns to queries such as: "shoes" "adidas" "athletic", etc., and less obvious ones such as "slippers" that the Adwords system has determined will benefit you and likely lead to a conversion on your site.

This is a smart move for publishers who have had trouble filling their inventories and spending their daily budgets. We hope of course that is an optional feature (as was broad matching).