Each year, Google changes its search algorithm around 500–600 times. While most of these changes are minor, Google occasionally rolls out a "major" algorithmic update (such as Google Panda and Google Penguin) that affects search results in significant ways.
For search marketers, knowing the dates of these Google updates can help explain changes in rankings and organic website traffic and ultimately improve search engine optimization. Below, we’ve listed the major algorithmic changes that have had the biggest impact on search.
For tree service companies that means having relevant content that shows off the tree servive company's brand as well as authority on the tree service niche. Case studies about recent jobs do just this. Take some video or images of a recent tree service job and create a case study page shoeing what the job was, how it was handled, and how it was completed. It a great idea to add in a happy customer testimonial after the case study as well.
To learn more about Google Core Algorithm changes visit https://moz.com/google-algorithm-change
