failed referrers from a competitors login page?

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I'm looking at my "analog" webstats, and over 50% of the pie chart for
"failed referrer report" is the signup page of a major competitor.  Are they
stealing my customers?  Or are customers deciding to come here after failing
to sign up with the competor?

About 25% of the "redirected referrer report" lists the same site.

What exactly is "failed referrer?" What exactly is "redirected referrer?"

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