I had been watching the maps.google.com.au properties feature for a while as Google trialled it in Australia, but have just noticed that we now have it in the UK and most of Europe. I would say that this will be an important place to have our properties listed in the near future.

From what I can tell, there's no api (yet) to allow us to upload and refresh the data on Googles servers, but for now, it's just a matter of uploading a spreadsheet or csv with all the properties details in a set format. I think this would make a nice plugin

Here's the FAQ - http://maps.google.com/help/maps/reales ... aq.html#q1