I have 3 closely related sites, and believe that combining them would have several benefits. The main site, where I'd like to have all of this content is only indexed in Google for about 8,000 pages or so. Site #2 has about 80,000 pages of unique content and Site #3 should have about 300,000 pages soon. I am fairly confident that my traffic would go from a few hundred to a few thousand unique visitors per day if I can do this so I'm trying to figure out what the options are. Site #2 is coded in ruby on rails, while site 1 & 2 is php. Eventually I'd like to have everything in ruby, so I don't really want to move the content and the db to site 1 if I can avoid it. I'm wondering how I can leave the sites on their 3 separate hosts, but all pointing to site 1's domain so site 1 gets all the traffic. I would like to keep the 80,000 pages indexed on site 2, and simply change the url but I'm not sure how the redirects would be setup. If I created 2 new subdomains on site 1, and created a DNS record so that site2.com and site3.com point to site2.site1.com and site3.site1.com respectively, would the indexed urls eventually change from site2.com/keywords/about/thepage to site2.site1.com/keywords/about/thepage in Google? Or would I have to do a 301 redirect for each one of the 80,000 pages of site 2? thanks Scott