Just got the offer in the mail.

I fly with Delta, BUT most of my flights are short, so I barely made silver this year. (although I am a Kryptonium member)
My flights gain me 500 miles per leg. (my currently weekly flight is barely 60 minutes)

I will be honest...this would be a great deal...but money's tight and I can't justify a $1 to $2,000 flight just to get/keep the Platinum membership.