Well, I figured out a glitch that's been holding back my publication of the frogloop Nonprofit Conference & Event Calendar. I've wanted to get this out for quite some time, but couldn't get passed a small HTML code glitch. I hope you find the calendar useful.
You can bookmark the calendar view at http://www.frogloop.com/nonprofit-events-calendar/.
I've also added an online submission form for suggesting events. The idea behind this calendar is to aggregrate events, seminars, webninars and conferences that would appeal to the nonprofit communications professional. Thanks for your input!