Using a Premium Account from last 3 or 4 years, earlier had my 3 friends sharing the account(and possibility was we 4 were even further handing over the passwords to some more people so sometimes we used to get that 4 screen concurrent error during weekends), so one friend dropped the subscription due to his own reasons and we decided to continue with 3 people since last 1.5 years.
Even further I have set profile password separately for my profile so no one is able to access my library without my permission because earlier there were few contents that someone used to watch like 365 Days etc etc on my profile