I disagree. Those files are typically hidden and will be deleted when the file is closed, so there is no essential need to ignore them because if they did get synced they should get deleted as well. Also, if you are going to attempt to target those sorts of files, I would expect you shouldn't also target Folders, which your default rule does. I would also expect the rule would target only hidden files, not unhidden files since you can never account for what a user might decide to name a file. I did add my comments to the thread as you suggested. I presented an exceptionally easy way to assist users like me that need to make global SyncIgnore changes.