More on Dropbox security.
In addition to those security concerns, also keep this in mind:
...in other words, if somebody gets access to your hostid, changing you password isn't going to matter the tiniest bit in the world.
And then we've got this:
Business Transfers. Dropbox may sell, transfer
or otherwise share some or all of its assets,
including your Personal Information, in connection
with a merger, acquisition, reorganization or
sale of assets or in the event of bankruptcy.
...all your data are belong to us. Might be standard business practice, but is it particularly confidence-inspiring?
Really, start the DropBox exodus already.