hmmm...
a machup = tests on 32 tracks
for each track, 8 tests at least
doing a machup 500*500 times = 25.000 times,
so at least 8*32*25000 = 6.400.000 tests that should make the php server each time the page is opened...
I'm not sure it would be possible...
It could be possible but I thnk, only one update of this ranking per week or month.
Then... someone have to have free time to do that...
ANyway it's a good idea