Update your site according to new Page Layout Algorithm from google to get better SEO ranking in future as well. Few days back Matt Cutt the head of Google’s Search Spam team announced that they made some changes in their page layout algorithm and these changes will affect all those websites or pages that have a lot of ads with very little actual content on it. That means if your website is full of ads or a lot of white space and it have a very small useful content for actual user then google may reduce the SEO ranking of that website or webpage.
Sine this was released on 6th of February so it is very much possible that it already affected on your website. However, if you still see the same amount of traffic from your organic search result and you use a lot of scrolling techniques and adds on your website, then we suggest you to change it accordingly so SEO ranking of your website can remain higher in the future as well.
You can read more about it here: http://searchenginewatch.com/article/2328573/Google-Refreshes-Page-Layout-Algorithm
Do you think it will affect niche SEO such as driving instructors marketing?