404. That’s an error.
The requested URL /bookmarks/mark?op=add&title=M4.0++-+54km+SW+of+Redoubt+Volcano%2C+Alaska+%28BETA%29+2014-04-06+16%3A55%3A04+UTC&annotation=&nui=1&service=bookmarks&bkmk=http%3A%2F%2Fcomcat.cr.usgs.gov%2Fearthquakes%2Feventpage%2Fak11217842
was not found on this server. That’s all we know.