Ublock is amazing. I haven't seen an ad in so long! It makes my whole experience safer. It's quite simple to customise (I've never used the advanced settings though as I am definitely not an advanced user). I appreciate this extension and the people who make the filter lists so much.

Haven't seen an ad, or a website detecting I have an adblocker. The only thing I've seen is a website saying "an ad used to be here", but those might've just been placed behind the ad and not a sign of the adblocker being detected.
Youtube does sometimes detect you have an adblocker, but it's always fixed within a week. Even then, them purposely making your video load 5 seconds slower is less annoying than a 30 second ad.

Ótima extensão.

Tốt

Now that Chrome came out with Manifest v3, I'm back on Firefox after a 15 year hiatus. Thanks to Raymond and the uBlock Origin team, the OG version of the extension is still going strong over here in FF land. Much love to the developers!