Implementation Level: Easy
Google is always tweaking their algorithm in order to make the Internet a more beautiful, useful & safe experience. This optimization tip is in regards to how Google feels about security.
Google has made it clear that it values the SSL certificate. This earns your site a Green Lock and the https: prefix. Google has to make a few broad strokes, obviously anyone can get a SSL certificate, but Google sees this as a good indication that the website with a SSL certificate is more serious than a website without it.
This is a very simple thing you can do for your website. Just call up your Host Company and ask them to walk you through the process.