GeoSpeak is a neat site that lets you — without having to register — find any location on Google Maps and write something about it. You’re given a virtual “pin” on the map that leads directly to your comment.
It would be great for students in geography classes to write for an authentic audience.
My concern, however, is that GeoSpeak could get filled up pretty quick with not-very-useful comments, especially since no registration is required. So, until I find out from them how they plan on avoiding that pitfall, I’m not yet (though I’m tempted) going to add it to either The Best Places Where Students Can Create Online Learning/Teaching Objects For An “Authentic Audience” or to The Best Geography Sites For Beginning & Intermediate English Language Learners.
Thanks to Google Maps Mania for the tip.