Ok so I always import my photos into iPhoto then export and save on hard drive. But today I just realized that the new photos that i've exported have the same file name (IMG_1078) as another old photo that i might have deleted on my phone. I had no idea about this before and probably have overwrote many photos. shiiiiiiiiiit ****kkkkk what to do?!?! How can I back up all my photos incrementally in the same folder on my hard drive and don't have to worry about them overwriting each other due to same names?????