I think he's talking about separate applications Anne, one internet address to another.
you cant 'anchor' across the net, only hyperlink, you can only anchor within an application/page.
What he wants is not yet possible with the current state of software.
Soon maybe.
P.S Google does love links, I dont some duplication will kill your ranking much really.
It may bring his blog readers to his forum, which I'm thinking, is the intention.
It shouldnt effect spiders reading it, so I dont think SEO is that big an issue.
Facebook interaction certainly dosent harm your sites ranking on google and how much duplication is involved there! Thats exponential.
Ofcourse its still not quite what he wants, but you could always wait for templets and write a script
to do it.
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