don't forget about flash cookies, a.k.a LSO's or SuperCookies. BetterPrivacy works well mitigating that.
i'd also recommend 'Secret Agent' - "Continuously Randomizes your Firefox/SeaMonkey HTTP User Agent, to Suppress Device Fingerprinting, and Resist Web Tracking. Also Prevents eTag Tracking.": https://www.dephormation.org.uk/index.php?page=81
i'd also recommend 'Secret Agent' - "Continuously Randomizes your Firefox/SeaMonkey HTTP User Agent, to Suppress Device Fingerprinting, and Resist Web Tracking. Also Prevents eTag Tracking.": https://www.dephormation.org.uk/index.php?page=81
hosts file is another option: http://winhelp2002.mvps.org/hosts.txt