One comma can really change things

I received an e-mail today with this subject line:

Europe Sale – Up To 25% Off Christina

What this subject line is trying to tell me is that I can get 25% off fares to Europe. But that would look like this:

Europe Sale – Up To 25% Off, Christina

Without the comma, this subject line offers “25% off Christina”… and I don’t recall giving Flight Centre permission to put me on sale.