The download (.zip) is formatted in iPod notes format for installation on your iPod.
To install: Download the .zip file and unstuff it. Plug your iPod into your Mac. When it mounts, find the Notes folder. Drag the MacworldEats folder into the Notes folder.
To use:: Go to your iPods main menu, select Extras-->Notes-->MacworldEats. Entries are organized by cuisine, by location, and by name.
Alternatively, you can browse the notes on your Macs.