Tremor Media ranked second with 804 million video ad impressions and an average frequency of 13.7 ads per users.

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The recommendations cover four areas: timing of a post, type of post (video, text, photo), frequency of posts and content of a post.

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Check out the video below of a piezo jet having its frequency modified like a speaker to play us a holiday tune.

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It developed Blast, which will soon let wireless carriers provide video or handle a twentyfold increase in calling traffic over a single frequency.

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The service, which streamed audio and video (both live and recorded clips) to mobile devices, was specifically designed to run on a frequency separate from the one used for calls and data.

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