As you may
know, Apple's Stickies isn't directly scriptable via Applescript (technically, you can send a system event). Still, one
enterprising soul has discovered a work around, and posted it to Mac OS X Hints. His script
creates a new text file, one for each Sticky. Once you've got your text file, you can do whatever you wish with it.
The script's author notes that his script only works on text for the time being; images will not be exported.
As reader Eric notes, this script is for the Stickies application, not the Dashboard widget. Ignore the fact that I used an image of the widget for this post (it just looked so nice).