I get this question quite a bit....
Our staff is used to being able to paste a well-formed listing of users into "Active Directory Users and Computers" when they are adding multiple users to a group. Since we are taking this tool away from them and replacing it with ADAxes, they complain that they now are restricted to adding a single user at a time.
Is there a way to do this (from the web interface)? If not, are you considering adding this ability in the future?