Google: Minor Mistake or Major Privacy Issue?

I received an email yesterday from a product manager at Google. I am one of  Google’s advertisers and they wanted me to fill out a survey. However, this product manager was not well versed in email marketing 101 and put about 350 the Google advertiser’s email address in the ‘to:’ line. I have had several people already take advantage of this and spam me. This was a minor mistake on the product manager’s part, but the implications are huge. Doesn’t Google have protections in place to keep this from happening? I wonder how many more spams I will need to endure?Everyone who sends out mass email needs to be versed in the basics of email marketing. So Google, I dedicated this binder to you!