404. That’s an error.
The requested URL /bookmarks/mark?op=add&bkmk=http://kell.ru/blogs/id1842/64492&title=%D0%9C%D0%90%D0%A1%D0%A2%D0%95%D0%A0-%D0%9A%D0%9B%D0%90%D0%A1%D0%A1+%D0%A3+%D0%9D%D0%90%D0%A7%D0%90%D0%9B%D0%AC%D0%9D%D0%AB%D0%A5+%D0%9A%D0%9B%D0%90%D0%A1%D0%A1%D0%9E%D0%92+%D0%9F%D0%9E+%D0%98%D0%97%D0%93%D0%9E%D0%A2%D0%9E%D0%92%D0%9B%D0%95%D0%9D%D0%98%D0%AE+%D0%9E%D0%A2%D0%9A%D0%A0%D0%AB%D0%A2%D0%9E%D0%9A+%D0%9A%D0%9E+%D0%94%D0%9D%D0%AE+%D0%9F%D0%9E%D0%91%D0%95%D0%94%D0%AB
was not found on this server. That’s all we know.