Last January, when I first wrote about the medium that I've since come to call screencasting (infoworld.com/843), it seemed an odd-enough topic that I felt obliged to justify it to my editor. A year later it's clear that my instincts weren't leading me astray. I'm now using screencasts — that is, narrated movies of software in action — to showcase application tips, capture and publish product demonstrations, and even make short documentaries. And I'm seeing others around the Net starting to do the same. Now's a good time to explain why I think this mode of communication matters and will flourish.
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