Billboard Charts (continued)

[Dan Bloom <DanBloom@alum.mit.edu>]

Roger Kirk <rkirk@videoserver.com> wrote, in part:
> This week's Billboard celebrates the 40th birthday
> of the Hot 100.  In addition to the obligatory statistical
> charts about the Hot 100, there's a review of the
> changing methodologies employed over the years

Thanks, Roger; that current article demystifies a lot of what I was
asking about earlier.  (Anyone similarly "out of it" can read their
history/methodology recap at
<http://www.billboard.com/sr/hot100/history.html>.)

- -- db

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