Great plugin! As for ideas, I have added code to run a regex against usernames for new registration as a spam control measure. In this particular case is is to make sure that the username is a valid ham radio callsign. Making something like this a generic option might be useful for others.
I have run into a problem though. If I have the CodeAmber Amber alert scroller on the page, the login button is disabled. The code for the scroller is:
<!-- Begin Code Amber Ticker code. -->
<p align="center">
<script language="JavaScript1.2" src="https://www.codeamber.org/js/codea.js">
</script>
</P>
<!-- end of Code Amber Ticker code (c)Copyright codeamber.org 2002 - 2008-->
