Some ecommerce sites claim to have lost significant amounts of traffic suddenly. This sudden website traffic drop happened at the end of April, 2010. Reportedly Google made between 350 and 550 changes in its organic search algorithms in 2009. This is one of the reasons it is recommended that site owners not get too fixated on specific ranking factors.
If you tie construction of your site to any one perceived algorithm signal, you’re at the mercy of Google’s constant tweaks. These frequent changes are one reason Google itself downplays algorithm updates.
A good word of advice from Vanessa Fox of Search Engine Land is to “focus on what Google is trying to accomplish as it refines things (the most relevant, useful results possible for searchers) and you’ll generally avoid too much turbulence in your organic search traffic.”
Live Case Study of Google MayDay Algorithm Update for Longtail Keywords
Here is the screenshot of a client’s Analytics account. You can clearly see two arrows pointing to a server sudden traffic loss from 30th of April to the 12th of May, 2010.
Google Changes The Algorithm every day!
Google likely makes a change per day to the search algorithm. They don’t necessarily release those changes each day, but they will release them in batches. But overall, he hopes to average at least one change per day to the algorithm. Check out this video from Matt Cutts of Google on these daily changes.
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