Implement SSL for suggestions.tradeskillmaster.com
Firefox is giving me a security warning for this site, and when changing to https:// it's telling me this site is not secure. That's probably something you want to take care of :)
For what it's worth, you can get a free SSL cert with LetsEncrypt that will get the job done.
While most sites are going to secure transfer, there really is no reason for such a simple sub site as this. A person doesn't even need to log in, though they can if they wish. There is no private information to secure. And even if someone wanted to inject code, that would likely be malware or your isp, and nothing to do with this site.
If you dont like the warnings you get, just move to Chrome. Its much better at those things anyways. Or if you don't want to move, im sure there is a white list configuration you can easily set up.