Firefox

What sucks (IMO) about having to use Agent Spoofers is that it seems like a positive feedback loop for sites to keep making stuff based on Chromium. If traffic metrics basically all show up as Chromium, then they would see less reasons to bother being usable by Firefox or even Safari. Kind of like when the top brass of a company are surrounded by "yes men". But I know it isn't quite that level of bad atm. Though ad companies would more than likely rather deal with working with Google as opposed to allowing Firefox users to keep blocking things.