Importing new photos into a library
In addition to copying photos directly from another iPhoto library, you can also import new photos directly into one of your iPhoto libraries by dragging the photos from the Finder and dropping them onto a library in the iPhoto Library Manager window. iPhoto Library Manager will automatically open up the library they were dropped onto and import the photos in iPhoto for you. Unlike when copying directly from another library, there will be no additional metadata such as ratings, keywords, faces, etc. for iPLM to copy across. This does still have the advantage of being more convenient than opening the library manually, plus you can still take advantage of iPLM's duplicate detection system when importing photos this way.