Pleasure to meet you again ! I am very sure you all had this doubt on your mind at some point in time that really, WTF is that "s" after http:// tag ???? and why it is even there ?
Most of you must have seen it when you are using Facebook. Right ?
HTTPS is a significantly more secure version of HTTP, which is the protocol you generally use to load up your webpages (whether you're aware of it or not). HTTP stands for Hypertext Transfer Protocol, so HTTPS stands for the same thing but with Secure on the end of it. This is because, as Wikipedia will tell you, HTTPS is "a combination of the Hypertext Transfer Protocol with the SSL/TLS protocol to provide encrypted communication and secure identification of a network web server."
Why You Should Care
So yeah, you get it: HTTPS provides additional security, but what does that actually mean when you're browsing the web every day? It basically means you're protecting your private information from people who want to steal it using readily availably tools like Firesheep.