I often can't read the whole of a post on the forum due to a vertical ad appearing and obscuring the rhs of the posting - is there anything I can do to remove/block them?
Indeed, if you're logged in then the ads won't appear. However, if they are obscuring the posts it will be because an image is in the post that is wider than the structure of the forum, therefore breaking the page but the ad won't budge.
I'm going to make a global announcement about this soon as it's obviously a problem.