404. That’s an error.

The requested URL /bookmarks/mark?op=add&bkmk=https%3A%2F%2Fwww.pro-linux.de%2Fnews%2F1%2F26244%2Fmozilla-ver%25C3%25B6ffentlicht-firefox-public-data-report.html&title=Mozilla+ver%C3%B6ffentlicht+%C2%BBFirefox+Public+Data+Report%C2%AB+-+News+-+Pro-Linux was not found on this server. That’s all we know.