We are already working on internal adverts to use with the Stack Exchange network of sites. This is limited to 220 by 250 pixels. Would there be interest in also creating a larger advert that people can post externally (outside the Stack Exchange network)?
What we need to discuss:
- the size of the advert (it's easier to design for a specific size and shape, even if it may sometimes be scaled elsewhere)
- external places where the ad may be acceptable
- any important points to consider
- any reasons not to advertise externally
If there's a positive response we can post another meta question where the answers are large adverts and anyone who wants to post one externally can (being guided by the votes if they wish).