I created a shared link for anyone with the link, and had tinyurl give it a nice short name without a tinyurl account so can't delete that. If I now unshare the folder in Dropbox that should kill the tinyurl from working, correct? Then can I rename the folder, share with a link again and get a different url to use? I know files have their own I'd and renaming will not affect the link you first got for sharing