[Steven Zahm]

@ Mark

Since Link reuses the same metabox which are used in Connections, you would use connections as the domain.

The domains are somewhat easy to find. The plugin should include it in its file header. So, if you go to the Plugin Editor admin page, select the plugin that your looking up the domain for and click Select. After the page refreshes, near the top of the file you should find Text Domain. That will be the domain that you need for Say What?

Hope that helps.