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I have two metrics..... Links that you didn't try to get and are delivering genuine traffic today.   These are from people who really like your site and are willing to give you their visitors.  Give thanks when you get these types of links.  Pay attention to where they are coming from, what type of content they are landing on and their context on the linking site.  Make more of that type of content and make it even better.  Find out what you can do to give help to the generous people who give you these links.  They are your fans and can become your strongest allies. Links within your own site that people are clicking to discover your best and most relevant content to what they are reading.   If you are not promoting your own best stuff, nobody else is going to do it for you. This is a free and powerful way to cultivate fans and allies and get people to engage your website.  Google is watching.   Make more of these links and be sure that every page on your site has some.  Use high quality images and words that elicit the click.  Test different images and words.  Make these immediately upon publishing a new page.

I was advised to deindex pages that had not been visited in the recent past. I deindexed about 150 pages and had a nice bump in the SERPS. Previously I was #9 and I jumped to #4. I have about a hundred more thin pages I'm working on and #crossyourfingers maybe I'll be top three.