The Links Not Checked section of your report shows links that weren't checked because they were Ignored by you, or because the remote server fobids access to that content.

This is usually seen with the alarm on banner ads, CGI's and other systems that do not need link verification.

See this discussion for more information on the robots.txt protocol and how to verify links that browsers can access but robots like LinkAlarm cannot.

Show the Pages - This report will also show the pages on which the links occur if Site Control : Report Display : Links Not Checked is enabled.