Just the fact that you used the word "tertiary" in reference to Facebook and LinkeIn proves that you know more than I do.

On the fan page thing -- I was lucky, or unlucky, depending how look at it -- someone else set up a fan page for my blog -- which is great because I don't have to maintain it, but sucks because they don't either.  The fan page has a link to my most recent post, which hasn't been updated since the page's inception - at least six or seven posts ago.

Hell, who knows?  I'm pretty convinced we're all at varying levels of "WTF?" when it comes to social media -- the so-called experts included.