SSL + website rankings
I read this: HTTPS as a ranking signal. You should then also read this: My blog doesn’t need HTTPS.
Frankly, I agree with Dave Winer here – blogs and many websites/publications don’t need to deliver content over HTTPS. For Google to say they are going to use this as a signal for PageRank, is kind of nasty.
SSL on sites is also likely to spur IPv6 further – many SSL sites, especially e-commerce (whom I think need SSL), need to have a unique IP per site. Soon we’ll have blogs require an IP/site. Of course, there are workarounds to this, but not all web browsers support this.
You can then see that sites like Cloudflare tell you that this is now provided with their Pro plans – a great way to start charging free accounts. You can also get your own SSL certs (which you’ll have to add on as a yearly fee), and then maybe pay more for hosting…
For testing, use Why No Padlock? and Qualys SSL Labs SSL Server Test.