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Inadvisable. There is a theory that Google penalises this since it is an attempt at influencing the SERPs.
Thanks to a deep bench of smart engineers and spam fighters, the webspam team is in more-than-capable hands. Seriously, they’re much better at spam fighting than I am, so don’t worry on that score.
I don't think that a penguin update would require Matt to be in the office. He said they have a really good team.