My first two posts on vb.org were actually two releases for vB 3.0
https://vborg.vbsupport.ru/showthread.php?t=69295
https://vborg.vbsupport.ru/showthread.php?t=69296
Both on 10th Sept 2004.
On vb.com it looks like this was my first post
https://www.vbulletin.com/forum/show...e-use-of-hooks
I dont remember this at all, but plugins did get an execution order parameter in 3.6.