404 - that's an error!
The requested URL evershift.com/domains/IMG/cache-526x345/kunst95-526x345.jpg was not found on this server
- that’s all we know.
What is a 404 error?
The 404 or Not Found error message is a HTTP standard response code indicating that the client was able to communicate with the server, but the server could not find what was requested.404 errors should not be confused with "server not found" or similar errors, in which a connection to the destination server could not be made at all.
A 404 error indicates that the requested resource may be available again in the future.
In 2008, a study carried out by the telecommunications arm of the Post Office found that "404" had become a slang synonym for "clueless" in the United Kingdom. Slang lexicographer Jonathon Green said that "404" as a slang term had been driven by the "influence of technology" and young people, but at the time, such usage was relatively confined to London and other urban areas.
Source: Wikipedia