
Originally Posted by
Muppet
We switched over to all SSL a few months ago and it has made no discernible difference to anything apart from the fact that our visitors' browsing sessions are now private and their logins (and our own) are encrypted, which were the main reasons why we did it. There was no instant noticeable change to search engine traffic levels, nor did we expect any to happen. If you are seeing a complete tank then you may have made a mistake somewhere perhaps in .htaccess or somewhere else that is causing Google to run into errors or redirect loops perhaps. Check Webmaster tools.
If not then the ranking change could be due to something irrelevant and you may be confusing correlation with causation.
Perhaps (deity forbid) you are running a Wordpress blog and logging in to the admin area of the site in plain text (congratulations, every server hop along the way could be logging your password). Perhaps you might have visitors that would appreciate not having their specific page by page browsing history logged by their government or local dictatorship. Or maybe they might need to log in to your site to participate in a forum and/or buy stuff. Or perhaps you want to protect yourself from MITM attacks and website forgery. There are many valid reasons to switch to SSL apart from the likely inconsequential difference that it may or may not make to search rankings, and none of them are a waste of time. If you think you have nothing to protect then you are valuing your own site as worthless.