To backup your preferences and data for NetNewsWire 3.2 for Macintosh, you should backup the following:
Preferences file:
[your home folder]/Library/Preferences/com.ranchero.NetNewsWire.plist
Data folder:
[your home folder]/Library/Application Support/NetNewsWire/
To backup your preferences and data for NetNewsWire Lite 4.0 for Macintosh, you should backup the following:
Preferences file:
[your home folder]/Library/Preferences/com.ranchero.NetNewsWireLite4.plist
Data folder:
[your home folder]/Library/Application Support/NetNewsWire Lite/
When a NetNewsWire user chooses Send to Weblog or a similar send-to-app command, NetNewsWire (usually) sends the article to the app using the External Weblog Editor Interface.
The interface defines a single Apple event that any application can handle, so that it’s easy to send articles from NetNewsWire to the app.
Some apps that support this interface: MarsEdit, Pukka, Delibar, Postr, and Webnote.