Since I come to realize that there is thing called clipboard virus which can change the address halfway I have started checking address in middle as well.
My revolution:
copy-paste address blindly >> check first letters >> check first and last letters >> current stage: check first-middle-end letters
I hope it doesn't come to stage where you have check whole address letter by letter

I don't really have an ides in what clipboard virus actually means and how one can contract it. I think I just have to be very careful on how I download files online and send it to my system. It might be very difficult for one to know how this virus actually get into system but time will te for us to have idea on what this actually means. There is no way this virus can be eradicated then it might be that even formatting the system does not actually take away the virus entirely from the system.