Selected answers from the Dumb SEO Questions Facebook & G+ community.
Grayson Blom: I have claimed my google+ authorship for my main website. ; Would it be wise to add this same html code to all of my niche websites?
Fazly Rabby: You'll need to verify authorship for all your websites.
Fazly Rabby: And if the question was if you should claim authorship for all your niche websites, well that depends on your strategy.
Grayson Blom: Let me ask you this. What would be a good reason not to claim authorship for all my niche websites? Would this be a bad strategy?
E.Dieter Martin: The only reason not to claim authorship would be low quality content you really aren't proud of. Everything else, go ahead and claim it.