Yup, for a long time I couldn't find my first ever PM I sent, I thought bitcointalk was deleting PMs after 6 months, until I realized PMs that were 6 months old stayed still. Then up until now I thought it was deleted by the other user.
Now I just realized there's "Pages". Aaaaaaand there it was.. Wow
I'm also glad I didn't find it out at the time since now I remember wanting to find it again to post on a thread to prove a point (I've done similar for years always, if the info wasn't doing any harm towards anyone). Although in my eyes it seems completely harmless, I became quite aware that this forum doesn't like PMs being posted publicly, including if the PMs is completely harmless to anyone.