I just put up Orb's new Web 2.0 media casting widget (check it out on the right sidebar under the "In Rotation" section). It's Free! So far, so good. I'm only streaming audio for now, but it works with video and photos too. The widget is called "MyCast" and you can download here. What it does is stream files from your PC to anywhere you can access the internet. You can have an embedded flash widget like I do on the right, or an email or RSS feed. They are promoting this for MySpace, where it should spread like wildfire. It seems to work nicely here on my humble blog. Is this legal? Probably not. But I'm enjoying it for now.
On a side note - this is a great way for blogs to keep people navigating over. With the popularity of RSS feeds, websites are loosing out on ad revenue because fewer people are visiting. So this is some value added / reward for surfing over that adds stickiness. Great stuff. Even though I don't put ads on my site - but you get the point.
The only downsides I can think of - you have to leave your media storing PC on all the time for this to be effective. Your PC essentially becomes a webserver. That entails having a robust, reliable, broadband connection. Orb says everything is secure, but you might take extra procaution and dedicate a junky PC with no sensitive information to doing this.