...You:
Know the birth names of your favourite starlets.Anyone here has some other criteria to add to this list?
Know who the male star is simply by recognizing their dick.
Recognize the same outfits (or clothing items) worn by starlets in different scenes.
Seek out interviews and press releases from you favourite stars.
With an almost anal compulsion seek to correctly identify the original name of the scenes your porn idols performed in, rather than accept compilation or website names.