IMO, it is senseless to ask about deceptive practices against STATED privacy policy.
At which moment of deception according to which policy at what time?
when the policies of online service are being retroactively, unilaterally, declaratively and without notices (notifications) changed on a weekly basis?
Any statements that contradict laws are null.
Policies, by contrast to contracts, are just declarations (or good will, or intentions), they are not bound by obligations.
In case if a side breaks a promise, then the follows simple question:
why have not a licensee stopped using broken license?
If a policy contradicts to laws then it is more than probably scam scheme.
There is a sense to worry about real practices (not just wishes) against real laws, but this is another question or rather, due to multide of laws and providers, questions.
Update:
There was an earlier relevant discussion here: What happens with a subpoena and a system designed to protect itself from you? on this board about a complaint submitted to the FTC (Federal Trade Commission) on May 11, 2011, the popular cloud-based data storage provider Dropbox, Inc. made false claims about the security of its users’ data, thereby putting them at risk while gaining an unfair advantage over competitors that actually offer the sort of security Dropbox advertised.
IMO, maximum what FTC can make is to oblige DropBox either to change its claims to non-deceptive or to change its functionality to comply with its declarations (policy).
I googled about in an attempt to find about the decision/response of the FTC to complaint and couldn't find any though there are a lot of discussions about complaint.