If you care about CAD development issues, and want to sit at the feet of a pioneer in the field, point your browser to
Michael Riddle's new blog. Riddle wrote the software that became the basis for AutoCAD, but did not become one of the company founders. He went on to create Evolution Computing, publisher of EasyCAD and FastCAD. He's still at work today trying to make CAD tools more valuable.
--RSN