Update: Dead

This deal has been around in mostly underground channels for a while now but now that it has been publicly outed on mainstream forums and blogs, I wanted to share it in case my readers could benefit. Additionally, the offer expires tomorrow so I don’t believe there is much harm in sharing this offer on my small blog at this point. 
The signup bonus is for 150,000 points on the American Express Business Platinum if you spend $20,000 in 3 months. The annual fee of $450 is not waived and this offer expires tomorrow (5/15/15).This is by far the largest signup bonus ever on this card. 

  
There is no online application for this offer – you must call American Express at 877-628-6737 and provide the offer code of L081-994-816-5743. 

The obvious drawback is the $20k spend requirement in 3 months – this will deter most people. I fully expect the majority of my readers will not be able to benefit from this offer. However if you have legitimate business spending in that ballpark or can manufacture spend near this amount, I would jump on this offer right away. I picked up this card when you could call in for a 100k offer so I am not eligibile to get this card (otherwise I would). If this spend requirement is too high, the 100k offer I received I believe is still available with a $10k spend requirement. Read my post (linked above) for more details.