Most of the tips found in MacWorld are fairly dull but this one about setting up PDF Services is pretty cool. It turns out in OSX 10.4 the Save as PDF button is customizable so you do not have to follow the instructions in this article, just click on the Save as PDF button and then select Customize from the menu. It would be nice if you could chain commands together in this menu so with one click you could compress, encypt and save receipts to a designated folder.