@AB Editor
I had BB issues yesterday; switched to mobile data mode and got various popups about having won something, which had an OK button but no 'x' to simply close it, so I had to close/reopen Safari or use back button.
Most pages only gave me 20 seconds or so before the redirect. I managed a one line reply using paste & submit.
A google search showed it is a well known phenomenon but involves hacking your site at the html level.
I block many apps from ability to use mobile data, as I'm on payg, so app store wouldn't launch and I never saw what app they were trying to foist on people.
hth