Hereâ€™s a really interesting bit about how you can omit the protocol part of a web address in your web pages. The predominant belief is that an HTTP:// or an HTTPS:// has got to be prefixed to a URL or it wonâ€™t work, truth is, it will. Try the following link:
View the source of this entry and youâ€™ll see the link code:
<p><a href="//www.kavoir.com/"></a>Click Me!</p>
This is very useful when your site is using SSL thus all the URLs start with HTTPS://. Because this approach lets the browser to automatically use the current protocol, you will not be blamed for using HTTP:// URLs on an HTTPS page and causing the notorious unsafe content warning to the users. It will also be a breeze to switch between the HTTP version and HTTPS version of your site. Itâ€™s totally automatic.
However, I donâ€™t know what this would do in terms of SEO and how Google sees any URLs without the protocol part. Learn more about what the hell HTTP is.