Earlier quoted context omitted.
A blog post saying "We have 20 petabytes of data in Google Drive" would be promoting the service with your data. Lawyers are always going to argue for the vaguest terms possible in situations like this.
Under Google's TOS they can promote their service by posting my pictures in advertisements on other pages, under the title, "Look what other people are storing on Google Drive."
TOSes are generally overly broad, yes. Virtually every one you've ever agreed to had language that could be interpreted in an absurdly negative manner.