Predictive Leads is a function of the BuiltWith Pro reports that lets you identify where leads in your report came from.

This powerful functionality lets you generate new lead lists based on the likelihood that the leads will eventually be in your existing report at any given time in the future. We do this by determining what the leads in your report used technology wise previously (back to 2011).

The video above shows an example of creating a new predictive lead report based on information from the current report.