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I think I found it, I actually had a badly formed Link pointing to this domain.  I fixed it so now I will have to check.  Thanks for looking into this.

http://mycordblood.familycord.com/2010/03/advancement-in-case-of-stem-ce/http:www.cryobank.com

Not sure where it picked the domain in the end from.  But it is on 100% of the links.

Yes it's a Wordpress blog.  Do you remember which plugin.  Something changed on 12/16 but i have not been able to trace it back.

The report is showing a 404 error where a URL is being appended to the end of the address.  It does not show up on the website of on the Sitemap so am wondering if I am missing something or is it a system error?