Should the image tag only work with https links?

Hey GGG,

Not sure if this is a bug per se; I think it's more of an oversight.

I'm connecting to your site using https, and most of the time my browser is satisfied the connection is fully secure. I noticed earlier today that sometimes the padlock icon representing a secure connection vanishes, and I spent a while trying to figure out why. It's http links in image tags.

Is this a big deal? Probably not, and I totally understand if you're not excited about tweaking the image tag to only accept https links - breaking hundreds or more of posts in the process. But with web browsers employing increasingly scary messages about insecure connections, I just wanted to let you know about this in case you weren't aware of it. If it's possible to leave existing posts alone, but not accept future posts if a http link is in an image tag, that might be worth considering.

tl;dr: Image tag can cause images to be loaded over a http connection, which doesn't go unnoticed by the web browser. There may come a day when browsers start complaining about this.