So, I said there were two winners. Luke Johnson, from Australia pounded me with so many worthwhile tips that I felt compelled to disqualify him from the running just to make things fair to everyone else. So, in lieu of awarding him best tip, we'll still send him a copy of the book and we've added a link to his blog in the book so you can go hit all those tips yourselves.
His blog is named What Revit Wants which, reminds me of a Wham! video, but maybe I'm just dating myself.
And here is a summary of the tips that I sent to them:
tip on Impression workflow that many have read
Direct readers to http://www.revitprofessionals.com/, where I have created a list of Revit bloggers3D views - shaded vs rendered
Thanks for the mention guys, and I look forward to checking out the book!