Forum Moderators: Robert Charlton & goodroi
1. The index page on xyz.theirdomain.com remains the portal page. All relative links will be changed to hard links to mydomain.com. I hope this will preserve the ranking of the front page.
2. Visitors of internal pages, usually from SERPs, on xyz.theirdomain.com will be forwarded to the corresponding page on mydomain.com via a meta-refresh and "page moved" backup link.
3. After some time (?) the internal pages on xyz.theirdomain.com will be deleted.
4. The internal pages on mydomain.com all contain a link to the index.html page - this is going to become a hard link to xyz.theirdomain.com/index.html
In other words, for visitors, my index page will continue to be on xyz.theirdomain.com. Everything else on mydomain.com.
Do foresee any problems with my plan?
I think this is because Google sees all the pages as "new", and all the links as new, and therefore it takes time to regain ranking. I used 301's to do something similar last year, and oh-boy do I wish I had not :-(
If you leave the old site up with original content and just link to the new one with same content then your new site could be penalized with supplemental results. Don't use a meta refresh as SEs have recognized meta refreshes as a tool of spammers so not a good idea to use those.
Another option would be to set up the new site with totally original content and link to it from the other site. SEs can tell who owns the domains (it's in Google's pending patent) but if your old site was on a freebie site it won't be in your name so you may get away with it. Use a different email, name and contact data on the new site to be sure. Otherwise bite the 301 bullet and be prepared to wait it out.