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I think your header links will look spammy. Also, your sharing out our Page Rank to your duplicate sites! I would either remove the links or no follow (are the links of value to your visitors? if not get rid!).

Ben, i'd love to know how much the On-page versus the Off-page stuff accounted for the rankings boost but can't put an exact value on it. All i know is MozTrust is up, DA is up so am happy for the time being. As soon as the next Index update is done i'll do a before and after Keyword Analysis report to try and get more granular. Personally, i think Directories will become less relevant as Social takes over as a 'vote of trust' but don't think G is killing off the directory business quite yet. Am definitely sticking to quality over quantity for these however.

The main benefit is that it allows you to control the image, url, title, and description that gets posted on FB.