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I agree with the idea. But I can't come up with any feasible model of motivations on how to implement it.
This all existed not so long ago.
See: Wirecutter, a billion other 'review' sites, blogspam, etc.
And businesses tend to seek more profits, in part by cutting costs. So what's the obvious way to cut the cost of an algorithm that involves a bunch of slow, unreliable meat?
This phrase seems too muddled to be useful to me. An algorithm that aggregates preferences of people isn't "just" a "a finite sequence of mathematically rigorous instructions".
If we run amok with the usage above (which I don't care for), what _isn't_ an algorithm? When everything is an algorithm, the word has no meaning.
We can also name it altavista