Yah, that turned me off as well. Though considering they offer password history checking, full text search on there servers (a nice feature), but don't explain how they do that and maintain the integrity of the encryption I am a bit dubious about even the enterprise level security. I suppose it depends on what you are storing there, and what level of security you're looking for.
My other Blackberry is a PlayBook.
heads up, if you want to get the 50gb you have to download a fresh copy from the appworld, i got the Box app, few weeks ago when it came out, i only get 5 gb then.. i tried signing up with a new email.. its still gave me 5 gb, until i unistalled and reinstalled.