I would like to suggest the ability to blacklist files and folders manually from synchronization.
For example, I want to sync everything in the Documents folder except for the folder ViberDownloads.
ViberDownloads is an application data folder that I cannot move, because Viber insists that it should be in Documents. On my computer this folder takes nearly 3 GB of space and causes sync errors in OwnCloud. I want to omit it from synchronization. But I want to sync the rest of my Documents.
Right now the way to do it is to make the folder “Hidden” which works for this particular folder because I don’t use it. But it won’t work for folders I actually use.
So, please add the ability to manually blacklist folders and individual files from syncing. It would be useful.