in some business, if you go online you don't have to disclosure your ID, some IP address might be opened to the public but some ip address kept in secret...
if you get involved, this points will be considered :
1. Securities system = protection of the servers against spammers, hackers, crackers
2. You don't care the outsiders want the prooves cause at the point above you must secured it as tight as possible. If you becomes them, you don't want your house built from glasses right ?!!!
3. protections of customers accounts
well, another points against them are ' i will get your money but you allowed trade your money, deposit your money, withdraw your profits but if my business got broken, your money will dissapear with me, as long as you obey my rules... read my terms&conditions, agreements and risks disclosure you fool!" heheheheheheheheheheheheh