I haven't yet tried this plugin but I have a few questions. How detailed do recovered photos actually become? Wouldn't brightening a dark portion of an image make it grainier? I was originally looking at your old post about HDR and tone mapping:
viewtopic.php?f=15&t=5570&st=0&sk=t&sd=a&hilit=hdr
Wouldn't this technique (using 3 different photos) be slightly better? By better I don't mean faster or easier but I think this method might be more detailed. If you have 3 equally detailed pictures at 3 different brightnesses, wouldn't using each picture's lightness merits end up with better detail?