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This is a whole new way to set off surfing the web, visually. Image maps in the past have been rather clunky and limited, but this, is BIG. There's stacks of data which originates from ODP.
You may need to download the Adobe plug-in to see SVG files, but it's well worth the time.
One of the coolest features of this kind of graphics file is the fact that the text is searchable. That has some far-reaching implications.
The W3C has been rather "methodical" (i.e. sort of slow) in developing the standard. But it's so very promising, I'm glad they are taking the time to do it right.
I also hear that Adobe Illustrator 9 allows SVG export. Here's the W3C page [w3.org] about SVG, with lots of good links.