I can 't seem to find an example of the format Magmi wants for the csv data. Could someone please provide a one-line example of a successful product import?
Edit: Magmi Wiki: http://sourceforge.net/apps/mediawiki/magmi/index.php?title=Main_Page
Answer
actually, it will depends on many factors (if you're importing images, creating categories, relationing configurable products, etc...), so there isn't a correct answer to your question.
But you can export a csv file of all magento's sample products (system -> Import/Export -> Dataflow - Profiles -> Export All Products) and take that as a reference, Magmi will understand it.
Notice that in order to use some parameters (for example the visibility values "Not Visible Individually", "Catalog and Search", etc...) as strings you'll have to use Magmi's "Generic Mapper" plugin.
I have spent the last month using it intensively, and must say I love it. If you have a more specific question don't hesitate to ask, it's still fresh in my brains :)
HTH