When I try to prototype a website thinking in the IAB display advertising guidelines using a grid system (960gs - 10-60-10) the only banner that fits in a 3 column space it's the half banner (300x250) so what do you recommend?
The logical response could be planning thinking in IAB ads spaces and forget the grid, if I use responsive layout I need to let the banners float but the aspect of the site sometimes looks strange.
