Can the website be more specific about non-free software?

[Tomek Chrzczonowicz]

Hello,

The Gnuzilla website says: "While the source code from the Mozilla
project is free software, the binaries that they release include
additional non-free software. Also, they distribute and recommend
non-free software as plug-ins."

Can the website be more specific? Are you sure that Firefox official
binaries still include additional non-free software since proprietary
Talkback crash reporter was replaced with Breakpad in version 3?

Regards,

Tomek Chrzczonowicz