This can result in your web site being banner from the search engine. Search engines also tend to have a difficult time navigating sites that use frames. Use of the NoFrames tag will help alleviate this to some degree by providing text and links that are visible to search engines. Larger web sites consisting of many page often obtain better rankings than smaller web sites. The more pages that a web site consists of the more exposure in the search engines it will receive, and the more likely it will be found on a particular search.
Gateway pages consist of mostly text and are optimized for a single keyword phrase.
They generally contain numerous links back to the main web site. Since the gateway page is designed for search engine indexing and not aesthetics, there is a better chance of that page receiving a higher ranking. When a person performs a search that lists a gateway page, they will visit the gateway page first before clicking on to the main site. Link popularity is also becoming a factor in site ranking among some search engines. The idea is that the more valuable and informative your web site content is, the more people will link to you from their sites.