Here are the the things I changed in my about:config to harden my Firefox. I'm a dumb Mac user so perhaps this is not nearly enough for your average /g/entleman. Share your about:config tricks too!
geo.enabled - false
network.prefetch-next - false
extensions.pocket.enabled - false
beacon.enabled - false
social.directories - delete string value
social.remote-install.enabled - false
social.toast-notifications.enabled - false
Loop.enabled - false
media.peerconnection.enabled - false
media.eme.enabled - false
network.http.sendRefererHeader - 0
general.useragent.locale - Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_4) AppleWebKit/600.7.12 (KHTML, like Gecko) Version/8.0.7 Safari/600.7.12
>>55477160
>Mac
Found your problem.
loop facebook
dns prefetch
disable ipv6
>>55477184
>Found your problem
n-never said I had a problem
http://www.logicalincrements.com/firefox/
>>55477197
>disable ipv6
why
>>55477160
>Mac
Found your problem.