Removing vendor from Firefox

If you don't want websites to know which distribution you're using—particularly from a static address—it is possible to remove the vendor string from xulrunner, thus removing the need for other methods such as using User Agent Switcher.

System-wide
Simply edit the xulrunner ebuild:

...and add the following (which was previously used to add the Gentoo vendor string), below the default prefs inclusion: # Remove vendor echo "pref(\"general.useragent.vendor\",\"\");" \ >> "${D}/${MOZLIBDIR}/defaults/pref/vendor.js" ...digest...

...and finally merge.

Per-profile
Enter... about:config ...into the location bar of whichever xulrunner-based browser you happen to be using and search for the general.useragent.vendor value. Double click on it and remove the text.