Might be old news for some. 25% extra in 2013 for those who joined from DL or NWA.

"As an e-RewardsŪ Member who joined us from either Delta Air Lines or Northwest Airlines and has claimed Delta SkyMilesŪ, we wanted to notify you that Delta Air Lines has chosen to no longer make SkyMilesŪ available to us as a Reward option. However, as of January 1, 2013 you can redeem your e-Rewards Currency for an expanded list of frequent flyer currency from American Airlines, Southwest, and United, as well as other travel partners!

EARN 25% MORE IN 2013

To show our appreciation for your participation in 2012 and to make your e-Rewards Currency go further with your new Reward options, we are going to award you quarterly bonuses for your activity during 2013. You can earn 25% MORE e-Rewards Currency for every survey answered!*

What's the catch? There isn't one -- just keep responding to surveys! Your 25% bonus will be credited after each calendar quarter during 2013 based upon all the e-Rewards Currency you earned during that quarter.

It's our way of saying - Thank you!

*Your 25% earnings (e-Rewards Bonus) will be credited within 2 weeks following the end of every calendar quarter. We'll notify you when your account has been credited."