This is an interesting little tip: Google is planning to increase the weight of websites running HTTPS in their search ranking algorithm.
The reason they cite is security. Even if a website is not hosting any personal or private data, HTTPS makes it harder for attackers to take down the site.
At the same time, it raises another question: who would you pick as a certificate issuing authority? Who is going to pick up the role of the 'free, validated, good-guy certificates that are widely-accepted'? Hm.. maybe a new business idea!