Don't SMOKE testers send an automated result back to CPAN? If they do, one could decrement for every SMOKE result for a given module ...

Ehmm.. I send a CPAN testers result for every module I install with CPANPLUS, 90 % of which is for actual use (the rest is just to test some modules that people are having problems with on this site), so these should probably count.

Massive smoke-testing shouldn't really influence the top-100 much anyway, since it would presumably make for about the same amount of downloads for each version of each module.