i just finished as a guest speaker at SANGONeT 2007 conference. Its a conference aimed at NGO's and I presented on using Google Earth and how by using overlays, Google Earth could be used promote the NGO's and their agenda. (that comes our wrong. You know what I mean).
I also met Rob Purdie (I hope his RSS finds this), and listened to his presentation on RSS, which was great.
Thanks to Matthew de Gale for the invite :)