You can now choose from several background layers in Potlatch.

Go to the options window (the little "tick" near the bottom left), and you'll see that the pop-up menu which used to offer only 'Yahoo' and 'None' now offers:

• OpenAerialMap
  
• Yahoo
  
• Mapnik
  
• Osmarender
  
• Maplint
  

OpenAerialMap is likely to be particularly useful. Not just because it's a great project in itself, but also because it uses the same low-res Landsat imagery as Yahoo - but enlarges it when you zoom in. So if you want to trace over enlarged Landsat, use this to replace the old Flash Player zoom.

(If anyone else has spherical Mercator GMaps-like tilesets that might work as a background image, let me know.)

Thanks to Christopher and Jon for configuring their servers (OAM/tah and tile respectively) so Potlatch can do this.

And for just one example of how it looks, go to osm.org/edit.html?zoom=16&lat=49.795&lon=15.445 and select OpenAerialMap!