We have several sites that have multiple domain names. Rather than forwarding to one domain name, we set up
rel="alternate" tags in the header of each page, pointing to the other versions of that page, with one page marked as
I was under the impression that this would allow spiders to correctly determine that the pages are not content spamming. However, a client has had a report from a "SEO Expert" who cclaims the opposite.
rel="alternate" tages are set up correctly, is there a problem?