Forum Moderators: mack
welcome to webmasterworld. for you as webmaster you can place (or not place) your keywords in any html file you want to. if the se takes infos out of it (and most do), it is a plus to have them in each file. they should be ever the keywords for the one specific html page. ;-)
i had only good experiences with keywords and description suited on each page. this is a lot more work but pays.