If a user is sent directly to one of the pages in my framed site, they won't see it in the context of the other frames that are supposed to be there. I want the documents in my Web site to be indexed, but I don't want the search engines to point directly to these pages.
Most search engines have a lot of difficulty indexing framed sites.
If you can identify certain pages on your framed site that you don't want search engines to pick up because they might not make sense out of context, you can utilize the conventions that exist for blocking robots from accessing any given page or directory on your site. This requires you to create a file named robots.txt in the root directory of your Web site. Webcrawler provides detailed information about Web robots and implementing a robots.txt file. He was using a content filtering program that blocked access to my site because it didn't have a rating for my site. As you've discovered firsthand, some users may have settings on their browsers or content filtering software that will block them from accessing your site just because your site doesn't have a rating from that service yet.