Today when I went to look at the releases I noticed that firefox had a strange icon in the address bar.
When I clicked on it I got this message:
"Firefox has blocked content that isn't secure.
Most websites will still work properly even when this content is blocked."
Here is a screenshot: http://screencast.com/t/kmdaC0eruAOq
I tried going to various other parts of MU like forums or news and they don't have that icon.
edit: apparently when I click on a manga series (any?) I also get it.

Google Chrome gives me a similar message of "This page includes script from unauthenticated sources."
screenshot: http://screencast.com/t/EKwRq2zV16bK

I just noticed it today but I'm not sure if it just started today or even if it's just me 😕

My guess is that it's some kind of ad that was blocked, but I don't know for sure

A just ruler amongst tyrants