I started looking for my older Imagefap accounts and managed to found them.

The first I found one from 2010: 

https://web.archive.org/web/20101231034912/http://www.imagefap.com/profile/Naughty%20Nyara 

So 16 years under that account.

Then I found my oldest one on Imagefap in 2009! 

https://web.archive.org/web/20090720231404/http://www.imagefap.com/profile.php?user=NitapA

So I've been exposed on Imagefap for over 17 years total now! Scary! 

And I found when I publicly announced the switch in 2018. Moving from simply “Public Domain” to CC0: 

https://web.archive.org/web/20180809222144/https://www.imagefap.com/profile/Naughty_Nyara 

So at least 8 years under CC0 and in the “public domain” for 17 or more!  Scary indeed!