Can the Saver Drop-In be used with arbitrary third-party URLs? To me this is what was being described, so if not, then no, it's not describing the Saver Drop-In.
Thanks. Off topic but slightly related if I'm going to rely on your service as a developer: as an engineer at Dropbox, can you tell me why I am seeing random photos that are not mine in my dropbox Photos folder? And does this mean that other people get to see my random photos? Edit: only on iOS. And maybe it's not a "folder" per se, it's the second tab from the left at the bottom of the screen.
That photos tab shows you photos from anywhere in your Dropbox account, so these photos may be from shared folders you're a member of. (Likewise, other people can only see your photos if you shared them with them.) Another thing that may happen is someone "camera uploaded" their photos to your account (e.g., by plugging into your computer and choosing to import photos when Dropbox asked.) If you're still not sure where they're coming from, you should open a ticket: https://www.dropbox.com/support/s/92/3201098/c/2