This has meant massive changes for all of us so called "SEO pros", as we've had to go back over our old links that we've built to ensure that they don’t appear on every page of a site. It hasn’t been until recently that my team have begun to notice the negative impact that site wide links have been having on sites.
Ultimately, people ask me all the time how they can get their site ranked to the top of search. The answer is all to do with sound content, keyword and synonym rich, which has good back links from accredited source pages that also share interests in similar keyword content.
If you've been investing in site wide links, stop now as they will have a negative impact. Instead try reaching out to the site you were linked from to get a single link from a targeted page.