2% cb category has not been effected particularly for this card, all exemptions where you will not get any cb are now same as for flipkart...like education, rent, wallet, insurance and other spents communicated as the mail to cc holders.. However all other murchant where you get any reward point on any cc, you will still get 2% cb.. It will be extremely difficult to list here the websites where you will get cb on ACE, rather than list only the exemptions...and such exclusions ahve already mentioned.