I'm a bit evangelistic about frequent flier miles, and often can't help butting into conversations about travel and offering advice. Last night while waiting on a pizza, I briefly talked with a couple of folks about some of the better signup offers out there at present, one of those is Amex's current offer for the Delta Amex. View from the Wing covers it HERE.
In short, Amex is currently offering a 50,000 Skymile signup bonus for getting their Gold Skymiles card and spending $1,000. There's no annual fee for the first year. The spend low enough that it could be covered either through normal spending, or you cold just knock it out with Amazon Payments. Also noteworthy is the $50 statement credit for your first Delta Purchase. As I mentioned HERE, that statement credit can be used to purchase a $50 Delta gift card. So the offer is really 50,000 Skymiles + $50 in Delta Credit.
Now, this is what I consider a "dresser drawer" card. The rewards for spending just aren't all that great at 1 Skymile per $1 spent. Consequently, when I got this card some months ago (with the identical offer) I met the required spend, and promptly put the card away in favor of cards with better earn ratios. Just my two cents.
UPDATE: This deal has now expired.