The Internet is a transient place, and at some stage a server that does not correctly handle caching will be found. You can easily add the server to the appropriate do not cache lists, but most browsers give users a way of forcing a web page reload.
Netscape Communicator. Pressing the Reload button forces the cache server to reload the HTML page that is being viewed. Holding down the key and pressing Reload forces a reload of all the objects on the current page.
page or graphic brings up a menu where you can select reload, which forces a re-get of the page. If you right click in a frame, you can re-load only the frame.
Microsoft Internet Explorer 4. With Internet Explorer there is no difference between a reload and a reload. A reload also does a different type of request, which essentially checks if the cache considers the page to be fresh. If the refresh rules on the cache are set to refresh in a long time, the page will come from the cache, and will not be re-fetched from the origin server.
Lynx. Pressing will force a reload of the page.