In short, many SEOs and webmasters were complaining that their rankings in the Google search results have declined drastically. In addition, many sent me images of their analytics, showing a clear significant drop in traffic from the Google organic source.
I asked Google about both these updates, and for each one, they said they have “nothing to announce.” Meaning, they won’t confirm if there was or was not an update.
We can confirm that the various search results monitoring tools, such as Mozcast, SERPs.com, SERP Metrics and Algoroo all showed volatility on August 21st. Since the September 4th chatter began this morning, we will have to wait for tomorrow to see if the tools show activity for today (the tools are about 24 hours delayed).
Google does not always confirm updates but we think you should be aware that on August 21st and September 4th, there was enough noise to report to you that Google may have done some sort of algorithmic update.