I tried uploading last night. Drag and drop from iphoto works (provided you use Chrome and not Safari). Unfortunately, its name conflict options are lacking. If a photo has the same name (different metadata including date) it gives the option to replace or skip, not to keep both. It would take me forever to ensure I am uploading all of my photos and not "replacing" or "skipping" any "duplicates". Until I can figure that out, it's not worth it for me - despite being free as a prime customer.