3. Why risk your v2 email/password?
Realistically, it isnt worth anything currently. Even if somebody has it, if you havent received your coins already it is very unlikely they will get it out of Mintpal. Make sure you change your password on others sites if you've used the same password.
this statement is false.
giving your password to someone allows them to claim all your coins still stuck on mintpal V1 and 2 not just your missing karma. it requires you to completely trust someone that you have never met. not only is this bad karma but it is bad and irresponsible crypto coin management.
this definitely should not be the recommended course of action.proof of ownership can be done by signed messages or email verification... i.e. sending an email via the email address which is registered to your mintpal account or signing a message against the karma address which you used to fund mintpal from your Karma wallet.
handing over passwords and other identity information to some unverified person on the internet should only be done as a last resort when all other options are not possible. once your information gets on the internet it is virtually impossible to remove. and it really doesnt matter if you trust the person you are giving it to or not because once its out there it can be stolen, copied, misplaced and abused in any number of ways.