Inkscape is a popular free, open-source, vector-graphics authoring tool, which uses SVG as its native format, allowing people to publish their art directly on the Web. Inkscape's online help system has been expanded and published as a manual, Inkscape: Guide to a Vector Drawing Program. InformIT, a large technical publisher, has listed this as their most popular product of 2008.
SVG, the W3C's way of representing vector graphics in the web, has found its friends in various areas, even completely "unwebby" ones like desktop environments.
So, who is using SVG? I'd like to give a short overview over the largest groups of people (to my knowledge) and how they use this XML based vector graphics format.
Never really saw the need. But then, it was only a year ago I got my first cell phone, and a month ago I wrote my first wiki entry. Wow, at this rate I'll probably be texting from a Wii in no time. Is that what one does?