Source Master
A person who is good at finding out sources to gather crucial information and hence, is also good at identifying sources of other people due to their skill set.
Person 1: That girl looked really cute, I need to get her details.
Person 2: You've come to the right person.
Person 1: You're a source master, man
Person 2: You've come to the right person.
Person 1: You're a source master, man