Danny
Sorry, but I didn't read any implication in Amazing's post that suggested that there were Pop-up ads on Pprune.
I understood his post to refer to the myriad of sites that do exploit this technique - particularly the horrid ones that are written in JavaScript - sometimes using full-screen settings or putting the 'focus' on the horrid ad.
I know only too well about these matters - I've worked in the Internet industry for over 15 years (making me a veteran unfortunately - but not by age!).
I can only support your statement - I have never seen any pop-up ads anywhere on Pprune.
Cello