There is a saying that goes something like “If it looks like a duck, and quacks like a duck, then it must be a duck”. It seems however, that contrary to the aforementioned saying, that even though everything pointed to an algorithm shift late last week, there wasn’t one. All of the signs were there, and the search results pages reacted in such a way that it seemed clear there was one.
Some of the signs that you can look for on the surface are fairly obvious, but some of the shifts need a long term history to double check information against. One of the first things you see as a user, when your results page comes up and you find you don’t recognize any of the returned values, that would be your first clue that there is activity within the algorithm. These shifts don’t often drastically affect the long term results, but an example of a large shift would be when Panda, Penguin, and the EMD (Exact Match Domain) were implemented.
Getting a little more in depth with examining the results page, a fairly common result of the algorithm making any kind of a shift is having a page built of mainly internal pages. To explain, instead of seeing a results page with addresses of www.abc.ca, you see internal pages, www.abc.ca/our-story.html. It is a change that is less noticeable than having a page of results that you don’t recognize, but it is this change that those who work in the realm of search optimization will look for first.
A much more in depth analysis can take place with the SERPs if you have the historical data for a website you manage. This information is one of the larger metrics that we will use as SEOs to determine if there has been a sudden change. Using the historical data we’ve compiled monitoring your website while helping you improve your online rankings will enable us to give a clearer answer to any questions you may have if you’ve suddenly found you’re no longer on the front page.