I couldn't find a separate community for Automator.
Here is a link to an Apple support Article, which is probably still useful even though it says it is for Lion:
You might try using Automator Help to find additional information.
By default, they are saved in your user Library/Workflows.
To get to your User Library, hold down the option key and select Library from the Go menu in Finder.
The closest thing to an Automator forum woudl be Mac OS X Technologies
It doesn't list Automator, but it fits in there.