I may be confused about rollover nights, but I thought the number of rollover nights is the delta between nights during 2009 and the nights necessary to renew whatever status one started with in 2009.

For example, I started as Gold (a 50 nite requirement). I'm platinum now, on account of the rolling year policy, and anticipate 65 nites for 2009. So, I anticipate 15 rollover nights, n'est-ce pas?

If this agoritm is accurate, getting to 75 nites should not act to diminish OP's rollovers nights. If OP started at Plat, there would be 0 rollover nites, if Gold, there would be 25, if silver, 65. "hitting" 75 nights (as opposed to 70) would not have any effect of diminishing the rollover nites.

Please correct me if I am wrong.