I have BTSync on my main computer and on my laptop, with an empty Lightroom catalog in my shared folder. When I'm on the road, I import my photos into Lightroom. Assuming I have WiFi available, I'll just leave my computer running overnight, and by morning, my edited photos are mirrored at home. Then, when I'm back, I'll just import the catalog in BT Sync into my main catalog. This eliminates my old process, which is to export a catalog onto an external drive, then import it off the drive onto my main machine. It also saves my from having to give money to some cloud service to do the same thing for me.