Open-source video-editing tools and publicly available sounds have made the creation of educational materials virtually cost-free but that doesn't mean that eco-blogging is safe.

ECONOMIST: The environment and people power

In addition to its government-related Webcasts, DakotaCast is experimenting with including interactive video clips in informational materials on the state's Web site.

CNN: Coming to a local Government site near you: Live video

The news follows an announcement earlier this week that another user-uploaded video site, Paris-based DailyMotion, will also be using Audible Magic to filter out copyrighted materials.

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