I have a client who is considering moving old site content to a subdomain (something like archive.website.com). I would set up 301 redirects for all the content moved off the www site.
Our question is, will this hurt the search engine results? My research has so far given me different answers, so I thought I would ask here!
The pages are well ranked now, and it is very important to the client that they do not lose traffic from search engines, especially, of course, Google.