Does anyone know of a good SEO checklist?

Selected answers from the Dumb SEO Questions Facebook & G+ community.

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  Valentina Alessandrini: Anyone know of a good SEO checklist? ;
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  Greg Kristan: http://www.seoworkers.com/tools/analyzer.html.
  
  This will show you stuff like title tags, ALT tags, etc. You can use this for any page as a checklist ;
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  Valentina Alessandrini: Thanks +Greg Kristan ;!
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  Jim Munro: It's normally polite to wait until someone else recommends your tool, Jacek. :)
  
  Here is where it's hard. I'd like the sitelink to stay but what do we say to the others that we must remove from here every day for the same issue. How about we compromise and disable the link? :)
  
  Someone else will recommend it one day soon, I am sure.
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  Jacek Wieczorek: But you were asleep +Jim Munro ;;)
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  Jim Munro: You are perceptive, Jacek. Lots of people cannot tell the difference. :)
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  W.E. Jonk: From the expert panel in this weeks SEO Questions hangout on air on 01:58:35 into the YouTube video: https://dumbseoquestions.com/q/does_anyone_know_of_a_good_seo_checklist