404. That’s an error.

The requested URL /bookmarks/mark?op=edit&bkmk=https%3A%2F%2Fwww.eukhost.com%2Fkb%2Fhow-and-when-to-use-http-301-redirects%2F&title=How%20and%20when%20to%20use%20HTTP%20301%20redirects&annotation=When%20your%20browser%20client%20connects%20to%20a%20website%20over%20the%20Internet%2C%20it%20sends%20an%20HTTP%20request%20to%20that%20website%20for%20the%20information%20it%20is%20looking%20for.%20The%20website%20then%20responds%20with%20an%20HTTP%20status%20code%20to%20inform%20the%20client%20how%20it%20will%20deal%20with%20its%20reques was not found on this server. That’s all we know.