When you see the letters "PDF," you probably think of Adobe Acrobat. Well, there will be another PDF in town on May 16: Personal Democracy Forum 2005. The conference, to be held at the CUNY Graduate Center, considers itself the "premier event for political leaders, activists and operatives; technologists, journalists and futurists and anyone else looking for strategic understanding and market opportunities in the evolving world of technology-driven politics." Among the guest speakers: Craig Newmark of Craigslist and Dan Gillmor of Grassroots Media Inc.