Not only warning window which only show once, maybe also show the warning every days/weeks.
That would be an overkill, its enough to warn the user once, if he doesnt listen, then its a futile for that person.
Might be good idea, but as far as i know, most newbie that i see never see pinned thread.
Better than nothing.
I think bitcoin.org and wallet's website already tell newbies about it.
Maybe make the info bigger or put it at homescreen to get their attention.
Not very visible. I havent seen any reference to wallet security there.
So, doesnt matter what we try to do, these retards will always lose money.
And just to clarify, i do agree some services need more warnings and other helps, but a wallet doesnt seem the case.
Still its our task to make bitcoin userfriendly. Otherwise they will leave and start mocking bitcoin, stupid people can never admit their faults they always blame something else.
But bitcoin should not be a target for trolls, so we must be professional and helpful to newcomers.
ATM and banks dont say us how to manage the account, how to store the card and/or how to store our money... like you already said:
Actually they do, i got a user manual when i opened a bank account for first time at a bank.
And ATM's have a help page in them where you can read how to use it.