Do You Keep A List of People You've Boned?

This article has provoked a question. Is it conceited for a young woman to keep a list of people she has had sexual intercourse with, or merely practical?

Since losing my virginity at 17, I have kept a running list of my sexual encounters. My tally comes to 22 (24 if you count non-consent).

Spill the beans, y'all! Do you track your sexual encounters? If so, how, and why?