penders - 1:11 am on Feb 20, 2010 (gmt 0)
By 'web surfers', do you mean desktop users? If so, I can't imagine there being many users that have disabled frames in their browser? How DO you disable frames in the mainstream browsers? (The setting for FF appears to be buried in about:config?)
For other web users, it may be as bill suggests - their browser may not even support them?