In the past, as well as currently, websites have been made using Frames. Basically, a frame is a way of presenting your website allowing for faster navigation. Because only part of the site (or a frame) has to load for each page, the time it takes for that page to load tends to be less. Google states:
“Frames can cause problems for search engines because they don’t correspond to the conceptual model of the web. In this model, one page displays only one URL. Pages that use frames or iframes display several URLs (one for each frame) within a single page. Google tries to associate framed content with the page containing the frames, but we don’t guarantee that we will.”
The overall upside of having a site in frames is completely outweighed by the downside of its effect on search engines and the ranking process.