Saatchi & Saatchi just turned the “out of office” reply into ad space

Is this a joke? Have these people completely lost their minds?

Emailing somebody and having them include an advertisement in the response sounds like one of the most unprofessional things ever.

Sounds like the advertising/promo tags at the bottom of Web-based emails (which started with Hotmail, I recall) as well as "Sent from my iPhone"...