I'm using Picasa as my photo management software, and I have a collection of photos that gets downloaded from my cameras either onto my Desktop or onto my Laptop. I'd like to automatically have copies of all my photos on both my laptop, desktop and my NAS. Does anyone else do this? Do you have any recommendations for Software or processes? Is there anything I need to be careful of? I had a look at Dropbox, but it appears to have a 2 gig limit? What about something like SyncBack?