Well, I just couldn't stay away from the machine... so I've been messing around with Second Life again. The Second Life scripting language Linden Script allows HTTP requests to be made by any objects in world. I've used that functionality to construct a simple voting heads up display which can be worn by the avatar. Any regions which allow user executed scripts can be voted for by clicking the HUD vote button.
The votes are recorded in a database and displayed here: http://www.eirewave.com/secondlife/voting/
If you have an SL account you can download a free copy of the HUD at the XStreet SL Marketplace - just follow the link on the results page.