[prox]

None of the birthdays I enter are real. :P

[cute_boi]

and no one should put real birthday lol. Birthday is mostly used for targeting ads.

This is why facebook can say to advertisers, "We mostly have young people using our service. So please put your money on our company"

And yes using account of 60-70 year old always receives less ads :D

[muzani]

They have to be consistent, yes? If I enter 6/7/1989 everywhere they just have to get it once.

[prox]

I use different ones for each account and write them down like passwords if it somehow ends up being a hint for password recovery etc.