Reminder: 75,000 AA Credit Card Sign Up Bonus Ends Feb 28

Update: Some offers mentioned below are no longer available. View the current offers here

The 75,000 mile Citi AA cards have been one of the top co-branded credit card deals of the past year. A lot of TPG readers have gotten these cards and then used the points for ultra-expensive Oneworld redemptions like British Airways and Cathay Pacific first class.

If you haven't gotten in on them yet, you still have time. Per the offer T&C : This Citi® / AAdvantage® card offer is valid only for first-time Citi® / AAdvantage® cardmembers who apply pursuant to this offer for an account by February 28, 2011. The American Airlines AAdvantage® miles will appear as a bonus in your AAdvantage® account 8-10 weeks after you have met the purchase requirements.

A couple things: many people in this lengthy Flyertalk thread have reported being able to get two personal cards if you apply at the same time AND a business card - in essence, 225,000 miles in one fell swoop.

Just remember, you have to hit the spend requirement ($4k in three months), so make sure you can do that for each card before opening multiple. The first fee is waived for the first year, but you don't want to waste a first time application on a bonus you'll never be able to achieve. I'm sure Citi will offer more in the future, but whether they will be lucrative is TBD. If you want to go for 100,000 miles, check out this card, though I'm not sure when the offer expires.