Google’s John Mueller said in a video hangout from May 1st, that often when he looks into SEOs or publishers complaining about Google de-indexing issues, often the issue is with Google not finding enough quality on the pages it has deindexed. John said in these cases, Google no longer wants to index the pages because they do not meet the quality benchmark.

He said this at the 33:41 mark into that video. Glenn Gabe gets the hat tip, when he posted this on Twitter summarizing this as “Are your articles suddenly getting deindexed? Via @johnmu: This is usually a quality issue & less of a technical one. Our algorithms might be looking at that section of the site, or the site overall, & thinking it doesn’t make sense to index pages there.”

Here is the video embedded at the start time:

Here was the question:

Here is John’s response:

He added it is good advice to get third-party advice from someone not you or close to your site:

Forum discussion at Twitter.

Update: Gary Illyes from Google added a bit more on Twitter after this post went up: