Also, I note that my Firefox browser comes up with 2 little logos on every page.
One is "tracking attempts blocked", which suggests that the anti-spam is doing something here. I don't know what Firefox is trying to "track" but I certainly haven't changed any of the default settings, which suggests that if my Firefox browser is trying to "track" something, so is everyone else's Firefox browser.
The other thing is note that parts of the page aren't secure, such as images. This is probably unavoidable and probably also not new. It's the tracking bit that I'm pretty sure is new.