OK, I admit that I have been using an old version of Firefox on two machines for a long time. I just got so tired of being told to update every few days! On my laptop (version 10) Adblock works fine. On a new machine I'm setting up now, using version 18, I find that the old Adblock is not available, but am told to try a newer version. However this doesn't work. Is Adblock a thing of the past? I certainly hope not!
Yes - Adblock simply does not block ads! For example on online newspaper sites, Adblock very efficiently removes all advertising on my old laptop using version 10 of FF, but on this new machine using version 18 and the newer Adblock, all the ads are displayed.
Yes, I know all about the security vulnerabilities, but as I said, I got so tired of Firefox updating itself every few days at one time, only to cause problems with add-ons that were no longer compatible. And if Adblock does not work in newer versions of FF, I will be even less inclined to update it!
AHA! After sending my previous reply, I tried clicking on the link you provided in your message, and the Adblock Plus I got then was different from the one I was pointed to earlier when I went through Tools > Add-ons and searched for Adblock. This is clearly the same add-on as I have on my old machine, and it works!