Re: Opinion feedback collected by news sites

[Thomas Mueller]

about.com has various polls on their home page (http://about.com) and various
subdomains, and I've wondered how they prevent multiple voting.  Cookies,
maybe?  With dynamic IP, as is the case with dialup and may be also with DSL and
PPPoE, the same IP address at different times can belong to two or more
different users.  Or the same person could disconnect, reconnect and vote twice
with a different IP address the second time.