The question is basically how good the rewards program is. If you can get better rewards even in different areas (for instance, plane tickets if you travel a lot), then you could potentially save more money that way, and then donate the saved money to SIAI.
Potentially yes, but would it happen in practice?
Luke posted about this on SIAI blog. Essentially, you can get a credit card with cash-back rewards program that automatically donates money to Singularity Institute.
This seems to me like a dream come true. Am I missing something? Are there any catches? Is there a better rewards program, which I can use to save more money, so I can donate more money to SIAI?