Some of the older Search Engines do not have the capability to read content from frames. These only crawl through the frameset instead of all the web pages. Consequently web pages with multiple frames are ignored by the spider. There are certain tags known as “NOFRAMES” (Information ignored by frames capable browser) that can be inserted in the HTML of these web pages. Spiders are able to read information within the NOFRAMES tags. Thus, Search Engines only see the Frameset. Moreover, there cannot be any links to other web pages in the NOFRAMES blocks. That means the search engines won’t crawl past the frameset, thus ignoring all the content rich web pages that are controlled by the frameset.
Hence, it is always advisable to have web pages without frames as these could easily make your website invisible to Search Engines.
WinHost Web Hosting