Popups, redirects, etc are all blocked within the ad networks from showing...but doesn't mean a rogue advertiser doesn't sneak one through. The networks generally catch them quickly, and I additionally get reports on what specific advertisers to block.
If you are logged in to the forum, you see the same ad "load" that I do, and I've never noted an issue. As users post, less and less ads are shown (ie: users with 250+ posts only see three, and paid/supporting members only see one ad position)
Is this on a desktop, tablet or phone? A screen shot helps immensely, but even a link to the thread might help.
