Blinkx software "listens to" and "watches" the video, then inserts text overlay ads based on the spoken words and to some extent, the images in the clip.

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Though YouTube began experimenting with clickable overlay ads on videos last year, users aren't likely to click on any ad that interrupts a video, says Forrester's Andrew Frank.

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Google has tried inserting overlay ads into videos, and on Tuesday, it launched a new program to distribute ad-laced, commercially produced YouTube video clips to sites through its AdSense network.

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Google (nasdaq: GOOG - news - people ) has tried inserting overlay ads into videos, and on Tuesday, it launched a new program to distribute ad-laced, commercially produced YouTube video clips to sites through its AdSense network.

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The new ad-matching platform will allow advertisers to select the Auditude-cataloged videos on which they overlay their ads.

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Things like overlay, mobile video ads, custom creatives that take over your screen for a second.

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Publishers have been bombarding readers with display ads that overlay stories, and breaking up stories across multiple pages of poor reading experience for the sake of additional ad impressions.

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