Recent quotes:

Dropbox hires VMware chief architect Matt Eccleston
Jive’s acquisition of StreamOnce continues to lead to new connections, and now, on top of the earlier email integrations of Outlook and Gmail — allowing full participation of email-only users in Jive social interaction — Jive has announced four others:  Dropbox, Chatter, Yammer, and Evernote. Yammer is kind of interesting considering Tony Zingale, the CEO of Jive, declared Yammer “dead” last week.
Dropbox hires Ross Piper from Salesforce to speed enterprise adoption
My bet is that Dropbox could be that upstart startup, the one that moves in to shake everything up, just like Google did when it launched Gmail, Google Calendar, and Google Docs.
Tim Van Damme, the lead designer at Instagram, has announced on his blog he’s joining Dropbox in early August