Are iframes harmful for SEO? Say I have my parent page and 5 "iframe pages" - I want all of the iframe pages to be indexed by search engines and they all have links from the main parent page (also have some js to ensure that they don't load outside the framset). Will they all get indexed OK? I presume when spiders come to your site, they don't just stop at the first link the find and spider from there, that they actually spider through all the links?