I actually ran acroos this on
Twitter last night. Thanks for the retweet, Greg. I didn't even know about this setting on Gmail. Thanks Chris Pirillo for posting this on your blog.
"When you are logged in to your Gmail account, go up to the top of the page and click on Settings. The fifth header down on the page is Browser connection. Next to this, click the little button that says to Always use https. This will ensure that no matter where you are at, you are logging in to your email securely."