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I seem to be having a very similar problem with my client's website. She is also a photographer. Since mid-April, her home page keeps dropping from Google rankings on and off on the desktop in incognito and non-incognito browsing. It seems to always be visible on mobile phones though. One day it's on page 4, the next day it's not anywhere to be found (even though some of her other pages rank). The site is here: evgeniaribinik.com I have done some blog writing (just text) for this client over the last few months, and recently she asked for some SEO help. After looking at her website, I noticed that she had WordPress SEO plugin on her site. She wasn't using this for the blogs, however. I don't think she did much of anything with SEO, but she did say that for the last few years, she was always on page 3 or 4 of Google. In mid-April, she saw that she wasn't ranking at all for the keyword "boudoir photography nyc" anymore, despite a few years of ranking for it. I told her Yoast would be good to use. However, after she installed it, the same issues keep happening. Right now, she has Yoast and WordPress SEO plugins installed (I'm not sure if this is causing an issue as well). But I really can't figure out why she keeps going on and off page 4. She also asked me to optimize older blogs that she wrote herself for SEO. When I look at them, they don't have meta descriptions, good titles or good keywords. I realize this is hurting her, but why would her site be fine for years and all of a sudden not now? Is it because Google made changes? Thank you in advance for any help you can give me! Jill

Awesome breakdown and many thanks for your insight! After checking out what you suggested it became very clear what the 411 was! Lots of good links in comparison to my 1 good link vs 23!