Originally Posted by monkeymagic
(but not on my credit card spend at the beginning of the month before I became silver)
You won't get bonus miles on CC spend -- they are solely for flown miles: bonus offers (a la UA double miles) don't get them either.
On the plus side they are calculated against the minimum mileages
before any multipliers, so all my W/V class LHR-EDI earn 150 miles each way on top of only 300 for the trip itself. Excellent!