Intelligence personnel must never save the search results that satisfy the research objective as it has no bearing on a case.
It's important to check the Terms of Service (TOS) on each site as they might offer back doors.
Regardless of the type of intelligence, the single function that permeates all activities is the Intelligence Process (also known as the Intelligence Cycle).
What benefit do fraudsters obtain by manipulating feedback systems?
Shoplifters who used drugs and traveled by train often bought tickets.