I know the maintenance of Geekswithblogs will cost a lot of money. And the advertisement helps paying the cost. Maybe will earn some money after the cost, because the advertisment which is such a big space is in every memeber's blog.
I think there should be a default setting which allows showing adv in our blog and there is also a option to hide the adv.
For example:
iframe
{VISIBILITY="hidden";
height=0;}
I do not like 'Powered by PRWeb' very much.