Google has introduced a new expandable ad option to AdSense. The move is part of a larger strategy to breathe new life into the source of 99% of the company’s income.

The new ads can be clicked on to expand into larger adverts and have the following characteristics, from Google:

• Ads will expand only after a user clicks and interacts with the ad.
• Mouseovers or rollovers won’t trigger the ad, in order to prevent accidental expansions.
• An expandable ad won’t expand more than double its width or height.
• Once expanded, the ad will appear as a layer over the page content so that your content will not be modified or shifted in any way.
• The user may close the expanded panel at any time.
• All expandable ads must comply with our standard AdWords image ad policies.

Read more at Marketing Pilgrim.