To whom it may concern

I often wonder who is the person behind: To whom it may concern.
Who does he think he is and why is all the secrecy?
I just had to send a business proposal for work I wish to get and the e-mail was of course titled:
To whom it may concern. Now if the work is real and the person behind it is real, why not just identify oneself? We on the other hand state our name (it's actually the first thing we do) very clearly. I do hope this thing it not an Israeli thing and all of us, all over suffer from it (you know, misery prefers company). But seriously, I think it just looks unprofessional. You are looking to hire someone or start working with him so what is the point of all this, why not come clean?!
I figured it out... To whom it may concern, actually means:
Are you ready?
I don't really want to talk to you and I probably won't even read your mail, but sent it anyway because, well, it doesn't concern you