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Hi there, I agree with Nate that the question is awkwardly phrased and I'm having a little trouble understanding exactly what is going on without real examples, but I believe what you're probably dealing with here is a case of one domain being stronger than the other, and that site ranking better based upon domain strength rather than true relevancy to the query. This is not uncommon and is often seen when very strong domains (big newspapers, etc.) rank for a query with a thin, unhelpful page. Higher-value, relevant results from much weaker websites rank much lower. Google attempts to stop this from happening but it's not uncommon.

User Generated Content such as comments have been proven to add value to articles. You can capture a lot of long tail phrases. With respect to linking facebook profiles, that is entirely under your control. The plugin should provide you the option to only present the comments without linking to the facebook profiles. If it doesn't, either modify the plugin or find a different one. Some relevant discussion: http://www.seomoz.org/blog/make-facebook-comments-box-indexable-by-search-engines http://raventools.com/blog/facebook-comments/

ok I'll take your word for it and see how it goes.  Thanks for taking the time out to help out.