First off I think GAOTD is a great service ... and every couple of months there is a 'keeper'
The issue is once you have to reinstall your OS you lose all of the programs .. as you cannot reactivate.
I just had to do a clean install of Windows 7 ... and as before have now lost all of the GAOTD activated programs.
Could you consider looking an an option so that as long as we keep the download file and license for that day we can re-install.
Such a pity to lose all once you are forced into a re-build.