I was only seeing them the first time I would browse the forum using an iPad. Now I see them very time I go to a new section or navigate through forum posts.
Pop up blocker is enabled. Any chance this is a setting in the forum software?
I know what he means. On my droid, I keep getting these reminders every so often when I come here that this forum supports tapacrap or whatever. I have to click "cancel", indicating that I don't want to download a special program to view this website.
I think I just fixed it. Made changes to not accept cookies. Then they popups appeared. I switched I back but did not clear my cookies/history. I cleared both then logged back in. Prompted only once then no more.