Thanks for the quick reply.

So far, I haven't been able to find a way to activate an ad blocker on EF without being punished by screens claiming that "Suspicious Activity" has been detected and setting Catcha tests, rather than just allowing me to get on and use the product. Blocking scripts from Facebook also causes EF to not play nice.

Also, the Hertz ad on the main.do page consists of five or six elements that are served from expertflyer.com and therefore require individual blocking. The "sign up to FaceBook" text link is even harder to get rid of.