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I'm not sure why you would to stare blind at PA or DA in general. It's just a calculation from some link value pointed to your domain, with no indication or link with google. You can have a PA or DA of 80 and still perform worse in Google or in Bing for that matter. The more incoming (follow) links the better your DA will grow (over time). My DA is stuck at 76, but i know it takes far more links from this point on to grow even further then when going from DA 10 to 20 or so. It's normal. And i dont really look at it anymore. What matters is organic traffic, good content and having everything as healthy as possible.