I'm writing and maintaining some open source utilities written in Python for importing and manipulating vector art files (Adobe Illustrator, PDF, and SVG).
Currently, I have a Blender Addon for importing .ai, .pdf, and .svg files as polygons.
The current version is distributed in Blender as a "contrib" addon. See the blender wiki page for it. As a convenience, I also have the io_vector.zip file available here for download.