By eHow Internet Editor
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One of the unique features of Digg.com is the ability of visitors to vote on the site's content. The more 'diggs' a piece of content has, the more popular it becomes, and the more popular it becomes, the greater its chances of being moved to a prominent page. If you happen to vote on something by mistake, however, don't despair--Digg.com allows you to change your vote.
eHow Internet Editor