It’s my MSN list, my email, I can block whoever the hell I want. Same goes for everyone else - what in the world is a big deal here??
Yes, I can block whoever I want, I don’t need an official reason.
No, I don’t care if others feel hurt because of this (if they do, they’re probably too sensitive for my liking anyway 
)
Yes, hell yes, it’s okay to do this.
People can find out all they want.