I’m sure you’ve already taken advantage of the Southwest Airlines 50,000 point ($800) bonus for credit card signup if you live in a Southwest city, but if you haven’t today is your last day. It’s double the usual bonus, and there’s no minimum spend — just use the card once and you’ll get the points. If you don’t live in a city where Southwest has a bunch of flights, I don’t think it’s worth getting the card. But if you do, today’s your last shot. Apply here.