Earlier this year, Google made a change within the US where a website’s snippet would change for mobile users to indicate that a page is Flash heavy and might not display well for mobile users.  Now Google is expanding this by starting to implement this for some mobile searches outside of the US.

Starting today, we’ll start showing a localized version of this snippet for Spanish searches on google.es, Japanese queries on google.co.jp, and English queries on google.co.uk.

When a flash-heavy site is returned in the search results, the snippet will change from the usual descriptive snippet for the website to one that indicates the site won’t display properly for mobile users.  This obviously will make most users choose a different result in the search result listings, except for those users who planned to visit that particular site.

This feature has been one of the many ways Google has been pushing to encourage more webmasters to make their sites mobile friendly.  Heavy flash sites are of largest concern as many mobile phones, including Apple’s iOS, do not render flash in their mobile browsers.

Pierre Farr also reminds webmasters that the only universally supported technologies for mobile browsers are HTML5, CSS and JavaScript.