Good morning all, Some time ago I was able to download a free ad blocker which removed the irritating people who want to be teachers on TES, and which made things much more pleasandt all round. But today, Firefox has had some sort of refresh thing and the adblocker has gone. And now the half-wits and the ads are back. I have searched to see if I can find out what the ad blocker was, but I can't track it down. Could some lovely, helpful TESSER remind me what it was? Thanks in advance.