One thing that really seems missing from shapeways is a way to easily understand what material is good for which sort of end result/post processing. Everyday we are seeing how designers evolve the usage of a material to do some neat things. We need to better communicate and collaborate on post processing capabilities of each material. And we also need to store these capabilities/results so that other designers can see what a material is truly capable of. For example I needed to create some silicone molds from an item, it should be fairly obvious to me that MJM based FD and FUD are amazing materials for this, with the only prep work required being wax removal. However the community doesnt have a way to really share how the uses of each material is evolving and tie those new pieces of knowledge to the material page, which is actually potentially hurting designers in their material choices/selection.