I have just downloaded the software today. Tried a couple of entry and here are some suggestions to make the software even more user-friendly.
Here's my wish list:
1) I wish that I can launch ABQE from within Addressbook itself instead of having it as a separate application. My dock is quite packed already. :(

2) I wish that when I choose to add or add one, the fields will be cleared without having to click on clear myself. The less the click, the happier the users. :) Having a text somewhere on the dialog box indicating that the entry has been done would be nifty.

3) I really wish that the application will not bring me to the addressbook everytime I complete an entry. I have to toggle back to ABQE and click on Clear before I can make another entry. For bulk entry, I would like to continuosly enter my contacts without seeing it first in the addressbook. Only after I completed my bulk entry, the ABQE should close and display the Addressbook with all the latest entry highlighted.

4) I consistently encountered this error: "Apple Script Error: No result was returned from some part of this expression. (-2763)" after pressing CLEAR and add another contact by pressing "ADD".

Well, just my thoughts. I want to thank you for sharing this application with us and making it available for free. :) God bless.