SVG stands for Scalable Vector Graphics. You can experiment it with the free software Inkscape that you can get at http://inkscape.org.

Like Pixl.com, find a free online based SVG editor and start making shapes and a map using this technology.

Upload your creation on a new blog post with a description of SVG. Also create a SVG from a picture that you created by uploading it to: http://www.autotracer.org. Upload the result to your blog.