Creative Guy today has links to two useful articles for (especially) print designers.
1. At Real World Illustrator— about the importance of resolution in Illustrator. When using vector based programmes like Illustrator and FreeHand, resolution isn't always an issue, but if you are using some of the effects available in these programmes, for example, drop shadow, the programme rasterizes the image in order to create that effect. If you haven't set an adequate resolution (apparently the default in Illustrator is 72dpi) then the result can be bitmappy and fuzzy. The article outlines ways to set resolution in Illustrator, depending on effects and output required. I for one have bookmarked it.
2. At CreativePro.com there is a brief article about the importance of paper grain, implications, especially for folding, and how to use this knowledge to improve your design.