"WriteMaps is a visual sitemap builder that helps web professionals plan websites with their clients. Think information architecture and gathering page content."
Small to medium web projects don't have time to muck around when planning and defining the project scope. Creating a sitemap in multi-purpose applications like Illustrator and Google Draw mean that you waste time drawing lines, boxes, and constantly resizing.
WriteMaps is a sitemap specific tool which takes care of all the lines, boxes, and resizing so that you get the visual sitemap output you want in much less time.