On entropy and randomness

What if you had a random.org-like service with a *shared* internet-wide entropy pool, where
users could *upload* entropy? Sure there would be griefers uploading continuous streams of
non-random data (e.g. 00000000000000000000000000000000000...) to be mixed into the public
entropy pool. But isn't the number and actions of an "internet-ful"  of griefers also
unpredictable (and thus increasing entropy)? :)