You can block them in Firefox by using the RequestPolicy plugin. At least, I assume that you can, because I am not actually seeing any ;o) https://addons.mozi

You can block them in Firefox by using the RequestPolicy plugin. At least, I assume that you can, because I am not actually seeing any ;o) https://addons.mozilla.org/en-US/firefox/addon/9727 https://addons.mozilla.org/en-US/firefox/addon/9727 At first it seems like overkill, because it blocks sites from accessing data from other sites, but you can enable certain sites (either globally or on a per-site basis) and it remembers those, so after a little playing around, sites you visit frequently look quite normal. It's also very interesting seeing how people assemble sites these days...