Emailing a bunch of users selected from a user reference field I have a node that lets me select multiple users in a user reference field. I also have a rules setup to email the author when someone makes a comment on that node. 

Now, how do I also email the users I selected in the user reference field when someone makes a comment? Would rules work in this scenario or something else?
You should be able to add another "Send email" action to your rule, but place it inside a Rules loop so it can iterate over the multiple values in the user reference field. You may need to first add an "Entity has field" condition to get access to these values.