Hello and congratulations for your software, as it is the best of its kind. I would like to propose an additional feature though. One reason for someone (like me) to use selective sync (or an additional account) is the possibility to use dropbox on an shared pc account. Like in work environments. Or where PC security isn't guaranteed (windows' user account security is just rubbish...). So, someone who just want his work files to be synced in his work PC, chooses selective sync. But, while he is logged in, everyone who access this PC could, without any verification, modify which folders would sync and add personal folders in synced ones and thus gain access to personal data! So, the feature i would like to propose is to password protect the selection of sync folders, as this could enhance data security in environments where shared PCs are used, without the need for additional dropbox accounts to occur.