Welcome to WebmasterWorld Guest from 184.108.40.206
Forum Moderators: phranque
It may affect your PR depending on how many people visit those pages and find them useful. If your site only has 5 pages and you remove 4 it will have an inpact. If your site has 10,000 pages and you remove 4 it will have minimal impact (if any).
Really depends on the scale and the popularity.