The site doesn't say a lot, so I can only guess, but the only way this could be useful or at least add something new would be to not require the receiver to use the app (receive by mail, by fb message, etc) and to add semantic (e.g. tags) and archiving (kind of social shared bookmarks?) capabilities.

Or maybe it's just an early released MVP not to be taken very seriously. I hope it's this last option, as I don't see no added value so far.