The wisdom of The Wisdom of Crowds is revealed here, in Norm's poll of the greatest composers.

By wisdom, of course, I mean that the top three in the poll fits with my own verdict:

Beethoven, Mozart, J.S. Bach, Schubert, Chopin, Wagner, Mahler, Brahms, Haydn, Handel.

That said, it's surely a poll of popularity, not of greatness. Much as I would have the same top three, the idea that Chopin - for all his well-merited popularity - is somehow a greater composer than Wagner is surely bizarre.

UPDATE: I have been informed by a correspondent that

Whatever you mean by 'bizarre' (both, Chopin and Wagner, were composers of genius and it is a matter of personal taste to prefer one to another), Chopin, unlike Wagner, did not write hours of naff, pompous and even boring music.

I agree it is, on one level, a matter of taste. So I should explain what I mean by 'great'. Chopin was clearly a genius of a kind. His piano compositions are (almost) all masterpieces, and I would not dream of denigrating them. But whereas Chopin worked, however triumphantly, within the existing framework, Wagner - like Beethoven and Bach - transformed the framework in which he worked, pushing it to previously unimagined developments. (Mozart did not, but I still think he qualifies since his music was so perfect.)

But I have to say that anyone who thinks that Die Meistersinger is "hours of naff, pompous and even boring music" clearly has something wrong.