Google is testing a new layout for its search results page for general and brand terms in Google AdWords that showed "Related to [search term]" last June, and it seems it has rolled out more broadly in the last few days.
"We're always experimenting with new features and tools to help users find information online. We're currently testing a feature on English language versions of the Google search results page in which additional advertisements for related queries or refinements of the user's original query may appear. This beta experiment provides users with a diverse set of relevant ads, and offers advertisers with relevant broad match keywords another opportunity to reach their target audience."
[tags]ppc,related ads,search results[/tags]