[jimbokun]

"--Mailbox's exit to Dropbox"

This article puts into perspective why this could be a potentially huge strategic play.

If you can convince people to use MailBox as their client, saving every attachment to DropBox by default, and continuing to push for DropBox integration in other iOS apps, DropBox could become the unofficial file system of iOS and the solution to the "complex workflows" cited in the article.