NoScript - JavaScript/Java/Flash blocker for a safer Firefox experience! - faq - InformAction:
Q: Can NoScript force some sites to always use HTTPS?
A: Yes, just open NoScript Options|Advanced|HTTPS|Behavior, entering the sites you want to force in the topmost box, and those you want to always leave alone in the bottom one.

I should probably look more closely into this.  I've commented before that, when I had an authenticator attached, that my World of Warcraft account was better protected than my email.  That's not an issue now, but there are other places that'd benefit from forced ssl.

Labels: ,