Hey folks, DON'T jump at this one. You can receive 500 Starwood points instead, which is a much better deal, since they convert 1 to 1 to airline miles on Delta and elsewhere(or better, if you are converting 20,000 Starwood points to 25,000 airline miles). Details are on the Starwood Preferred Guest web page, which I think is
www.preferredguest.com
I have already taken about 6 trips on Boston Coach in the last two months with the Starwood deal. They post a little slow, but about 4 have posted so far, for 2000 points so far.
So, I would only do the Delta/Boston Coach deal if you are not a Starwood member. Otherwise, you can do better than 250 miles.