By the way,
Something I have been wondering about but could not quantify, or find articles about
Say you post in a blog which relates to your field; your site is about exotic turtles; you post in a blog about exotic turtles, pr4, clean, etc...; so you get full benefit of a "quality link" (use exact anchor).
Now say you post in another blog, everything the same, BUT the theme of the blog is different; say theme is about movie reviews (so 100% unrelated, or 99%
QUESTION: how much (good guess) juice you lose because of the unrelatedness of the themes??