Just caught this news on Delta’s blog.  Historically, there’s been no central spot on Delta.com that summarizes available bonus mile promotions like this one on AA.com.  Delta has now added a consolidated listing of available SkyMiles promotions to its “Deals & Offers” page, and I even managed to register for two!  Check it out on Delta.com.  I think this is helpful, but a listing of targeted promotions along with a list of promotions that you’ve already registered for would be the ultimate solution.  According to the blog comments, Delta is working towards making that available….and that’s a good thing.