Have never been a big Dropbox guy but it seems like it would be prudent to start backing up some important database files and documents in the cloud in case all my hard drive backups go IRS on me (political joke). I've tried reading up on how Dropbox syncing works but am just feeling more confused. So here are my questions for the experts out there: 1) If I have a folder on my hard drive I wish to back up to Dropbox, I just drop it into the Dropbox folder. Now does this copy the contents of my folder into the Dropbox folder on my SSD, therefore doubling the space it takes up, or are the files in my Dropbox folder merely shortcuts for the cloud data? 2) If I wish to sync a large folder containing many documents and files and wish Dropbox to update only those files which have been changed, will Dropbox do that? Dropbox seems to be telling me that my files have the same names, should I replace or ignore. I'm not concerned about new names, I'm concerned about new data under the same name. Confusing. 3) Is it safe to create symbolic links in Dropbox to folders on my SSD so Dropbox automatically has the latest versions as I work with the files or is there a risk Dropbox will replace my new local files with old Dropbox files? Thanks in advance. ******************************** THE SOLUTION: Use Sync Toy (http://www.microsoft.com/en-us/download/details.aspx?id=15155) to sync only new local files to my local Dropbox folder using the "Echo" method where updates flow only left to right. This prevents any Dropbox errors from corrupting or deleting my local data. Since Dropbox is only seeing the changed files, cloud syncing will be kept light. Using a hybrid solution of Sync Toy and Dropbox (or OneDrive) works brilliantly.