Currently, the plugin is only built to support a single site instance, but I think it would be really powerful to add some support for multisite. Behind the scenes, I think this could potentially be pretty simple...

We could essentially have a "site" query to select a site to perform an operation for, and then just use switch_to_blog() behind the scenes.

Would be great to get some community involvement on this issue, since none of us maintainers are actively using multisite.