There are potential copyright issues when another site shows up within the frame of your site. Printing is often difficult. Sizing The width of the browser's window can effect how your page is displayed. The width of most computer screens varies from about 640 to 1280 pixels. Your Web page should work properly with the browser window set anywhere within this range.
Text can wrap and therefore, be adjusted in width.
Tables, cells, and images don't wrap and can not be adjusted in width. If you use non-text, make sure it fits. Experiment to ensure that your pages display properly at all browser width settings. The graphic safe area dimensions for layouts designed to print well are maximum width equals 535 pixels, maximum height 295 pixels. Test your pages on different PCs.