WordPress.org

Interstitial Ads is an easy to use ads manager for a full page ad that appears before the actual webpage. Ads that appear in a separate ('pop up') window while a webpage is loading, or are inserted between the contents of the page.

Features:

• Full page ads that gets noticed
• Use image ads or text ads (Flash, HTML, Images, Videos, Audio, Embed Code etc.)
• Timer can be enabled/disabled
• Close/Skip button can be enabled/disabled
• Impression: view counter
• Wait timer
• One time per user.
• Page control allows you to set on all pages/homepage or just on custom pages
• Multilanguage Backend/Frontend support
• Support customize colors
• Support for cache plugins (WP Super Cache and W3 or W3 Total Cache)

Plugin's Official Site WPmanage (http://www.wpmanage.com/interstitial-ads/)