Recently on Twitter Lisa Barone pointed out that the 404 page she setup drives some of her colleagues at Outspoken Media crazy. Personally I think it's hysterical, but that's not the point. Lisa got me thinking about the point of a 404 error page and what makes one good.
The great thing about 404 pages is that you essentially have a whole page dedicated to one very short message. This means you don't need to sacrifice creativity for utility. The 404 page is one of the easiest places to create a user experience that is both memorable and useful. As I scoured the internet for quality 404 pages I was quite disappointed that many social media experts, marketers, and even some well known agencies have bland or unhelpful 404 pages. So, without further ado, I give you ten prime examples of a quality 404 error page: