If you've had status on Delta once before, you may have received this offer. Basically if you fly 125,000 miles this year, they'll give you 100,000 more. That's a pretty sweet deal, with a couple caveats.
- Caveat One: Delta miles are relatively useless.
- Caveat Two: If you're an elite member of another airline, you're likely already getting a 100% mileage bonus. Moving over to Delta, you wouldn't get that bonus until you hit 50,000 miles.
So yeah. It's cool, but I don't expect any other carriers will match that. Interested?
Update: The post initially said that you had to fly 100,00 miles. Commenter Microwave let me know that Diamond Medallion is actually 125,000 miles.