There has been lot of uncertainty around the expiry of the Ambassador Accelerator promotion and I dropped an email to my contact at IHG regarding this.
The Ambassador Accelerator has now been extended to April 30, 2014. It is uncertain, what will happen to this program after that date.
Ambassador Accelerator allows InterContinental Ambassador members to earn 20,000 bonus points for every 15 paid nights at IC’s.
Remember that stays at InterContinental hotels outside of the America and InterContinental Alliance resorts within the Americas only earn you 2,000 points per stay regardless of the number of nights. Ambassador Accelerator basically gives you additional 1.333 points per night when averaged out.
For me, it would be better that the Ambassador Accelerator stays. I do understand that 2,000 points per stay for longer and expensive stays is not a lot.