In IIRC each year since its invention in 2010, Amex cardmembers got a bonus/ rebate for using their cards on SBS, such as $25 off one purchase per card or (in 2014) $10 off each purchase (max. 3) made at a "small business." Registration was required in some if not all years, so when I could not find a registration form online, I phoned Amex tonight to ask about it. The rep. told me the bad news. Oh well, at least we have the merchant-specific rebates, which are valid any day in a 1--3 month period.