netbuzz writes "Comic creator Randall Monroe suggested in a recent xkcd strip that YouTube comments would be better — or, more precisely, less idiotic — if only those posting them were forced to hear their words read aloud first. Well, YouTube has gone and made this "audio preview" a reality, albeit an optional one. And, it's not the first time that xkcd has contributed to the betterment of the Internet, as those who are familiar with last year's "Internet census" and its use of a Hilbert curve may remember."
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