Agree with most here here but I think we should break people out into 5 categories for these threads:

Apple zealots

Mostly rational people who prefer iOS

Mostly rational people who like both

Mostly rational people who prefer Google

Android zealots

There should be some way algorithmically to determine the people who are in the extreme categories, say...

extremism quotient:= (|upv| + |dwnv|) / max (1,|net score|)

Then if that exceeds some threshold over a certain period the person's votes could be ignored or diluted.