Thanks Lord B, you have summed up the situation exactly.
Reasonably sized gif's are ok, gifs and photographs which cause distortion of the normal forum page, create difficulty for members to read normal postings or change the shape of the borders are too big and in future will be deleted. Photographs, pictures and gif's must be able to fit inside a normal comment box. Multiple copies of the same picture will be deleted as will quotes containing the same gif's or pictures as the original.
If by allowing gifs to be used people ignore the requirements and I end up having to spend time dealing with complaints about too many gif's or pictures being too big because the originator couldn't be bothered to resize them as has been happening recently, or editing quotes to remove pictures already posted then I will contact admin to have a firm ruling to ban gif's added to forum etiquette.