Free content provider Zango has announced the availability of a new ad format, which brings ad messages directly onto the desktops of targeted users, popping up instant-message fashion while they consume news, watch videos or play games.

"Most consumers are familiar with the notification that appears when they receive a new instant message," observed SVP Rip Warendorf.

"Zango’s Slider ad format enhances the visual appeal of that messaging format and gives advertisers a new, consumer-familiar marketing vehicle."

The "slider" format is also a slick means of sharing the Zango value proposition; that is, delivering online content in exchange for viewing targeted and "time-shifted" advertising.

The Zango content suite includes games and youth-targeted entertainment material.