I really wanted to figure out a way to shorten links for use in Autocrat and FormMule, but I couldn’t figure out a good way of doing it using Goo.gl or Bit.ly. This is a great option, and with the CopyDown features in both scripts, the workflow could not be simpler.
Batch shortening with Google Docs – Po.st Support Center
This guide will help you setup your own Google Document that can return multiple short URLs in a simple manner.