Anyway, I would like to place my own "alert" here:
Alert on Fiat Money Services Businesses
The Legion of Bitcointalkers warn all Bitcoiners against using fiat money transmitting services that are not registered as Money Services Businesses (MSB) according to United States federal law (31 U.S.C. § 5330; 31 CFR §§ 1010; 1022) and claim to adhere to anti-money laundering requirements. A few simple steps can prevent intentional withholding of your funds. For example, avoid financial money institutions that collect know your customer (KYC) information from customers when not required.
in regards to "intentional witholding of your funds"
its a matter of fact and regulatory compliance that a regulated money service business CANNOT "take your funds" for whimsical/made up reasons of a business policy.. instead they at most without a court order can stop offering services within its business and request you withdraw your funds and be banned from returning after your exit
you wont see regulated exchanges withhold funds just for fun nor 'jus coz we can'
regulated money services only "take funds" when the receive a court order allowing them to take and forward funds to the courts for holding,
whereby the user then has to be contacted by the authorities to prove innocence to claim funds back
to avoid this. simply dont do anything listed as reg-flag suspicious via regulators guidelines MSB follow(dont do illegal crap)
MSB's only get a court order if they have found your financial activity to be of suspicious nature to a threshold level of triggering the business to report to authorities and thus the authorities using their own authority level guidelines if it meets their own thresholds get triggered to then seek further actions
thus your activity needs to meet a threshold of a threshold of suspicion to warrant further actions
its the unregulated CEX that would create business policies/service agreements that allow them to take and keep funds under private business terms
where you would then need to try to sue the business in court to prove their actions are wrong and get your assets back
(kinda hard to sue some as they hide corporate address behind proxy/virtual mail addresses)
best advice
research services you want to use, ensure you can locate corporations legal address and read their T&C's