Gap content building

YourAmigo, a SEO company, today announced a partnership with Coremetrics, about 2 months after they signed a deal with Omniture. Under the partnership, Coremetrics will resell YourAmigo's unique Spider Linker(TM) SEO service.

The upgraded Coremetrics package provides unique page creation capability. It provides deep analysis of the web site content and millions of search terms to identify "content gaps." It then fills these gaps by creating new pages which are highly optimized to drive more relevant search engine traffic.

To be honest: Before the deal w. Omniture (in Dec.)I've never heard of Youramigo and I've been deeply involved in the SEO scene for quite some time.

Despite that Spider Linker looks like a great tool that provides content to websites/keyword queries that are supposed to be there. I ususally handle this issue with a customized 404 page, which is obviously not as good.

I haven't tested Spider Linker, so I am not sure how it works, but I am a little curious if this "gap content building" works in real-time and within the SE guidelines.