I found a fun way to use facebook. I change my birthday once a month to the upcoming calendar month and then wait for the same "friends" to wish me another generic "happy birthday".
So I know I use facebook precisely once per month.
Hah, I've long been considering writing a daily cron script that changes my Facebook birthday to the current date. This post may be what gets me off my lazy ass to do it
Almost to a one, every close friend and family member on Facebook called me out the first time either by PM, email or on my wall. Despite even these public posts (which I did not remove), for 4 straight months the same dozen or so distant friends continue to wish a happy birthday. And another 40-50 other distant friends have posted at least once. This coincides pretty well with my previous real birthday stats if you add the close friends/family numbers with the average number per fake month of distant friend well-wishers.
So I know I use facebook precisely once per month.