A stupid fricking website "hosting" service which doesn't allow site visitors to download more than about 2 files at a time because if they try to, then it will instead show a page that says some crap about exceeded allocated data-transfer or sh*t like that, and if you try Save Target As, then browser just acts like it is having a 404 error or whatever.
I tried visiting a site on GeoCities, but after I downloaded 2 files, it just said: "The web site you are trying to access has exceeded its allocated data transfer. Visit our help area for more information. Access to this site will be restored within an hour. Please try again later," and refused to let me download any more files. Then I screamed at my computer.