Google is serious about website privacy, and with the release of Chrome 68 in July all non-encrypted websites will be branded "Not Secure."
Millions of websites have already been encrypted for privacy; you can tell if there is a green padlock to the left of the domain name. This means no one can view what you're viewing, and the website is safe from "man in the middle" attacks. However, if your website is not encrypted you might want to take action asap.
How will this change affect your website visitors? I suspect your bounce rate will increase significantly, as more and more website users become aware that they don't have a secure connection to your website. You'll probably hear about it from clients or customers. And eventually it will get to a point where you just don't want to deal with the complaints.
How much does it cost, you ask? If you're tech savvy you may be able to encrypt your website for free with Let's Encrypt. If you're not tech savvy, you can usually hire someone to do it for you for between $100 - $300. You have to be careful, however. Just installing a security certificate won't make your website secure if you have unencrypted "http" links. Those have to be changed one by one before you'll get the green padlock.
Suzanne Bradley is the Founder and CEO of WebX Marketing & Design, as well as Online Digital Menus. She is trained in HIPAA privacy and security, and regularly blogs about online security issues. You can email her at "firstname.lastname@example.org."