After slowly importing 1,000 photos from iPhoto into Lightroom I took the plunge and mass imported the remaining 10,000. My first strategy was to create a bunch of folders for simple organization: one for each of our dogs, one for each country visited, etc. The rest stay within dated folders for further tagging, such as those with all 3 of our dogs. Still have to tag every photo and to give them a location. Too much bloody work...