I synched about 50GB to google drive and discovered that it started silently eliminating some of my files. The eliminated files weren't found on google dive's bin, but were in my local mac's trash without any matadata or folder info so I couldn't put them back into their original folders. Good thing I had a backup of all these files. Their synch algorithm seems messed up, it also fails to synch every 2 hours on mac. I've since switched to dropbox, it is worth the extra cost.