I have noticed misused Russian pronouns “Вы” и “вы”. There is a difference between them. The Russian pronoun “Вы'' (with a capital letter) emphasizes a respectful attitude. "Вы" is generally used in letters for one exact person. We need to write "вы" and "ваш" with a lowercase letter:

when addressing several persons in private and business correspondence;
in newspaper publications, in advertising;
in literary works (dialogue, direct speech, personal appeal);
when quoting;
when we communicate with web users.