Excellent search function for any related documents on the site. I believe this place will keep getting better and better. You think they are going to address the AutoCAD web community, but there is nothing to be found. Still under construction but the areas that are working show a lot of promise. Some AutoLisp links.
Members have fuller access to more resources.
I reviewed this site a half year ago and trust me it has improved a lot since then. If you're looking for some solid research on things happening in the AutoCAD world, pay these guys a visit. 2D and 3D blocks of the month. Web site and User Group links. A fine, fine site.