Many web sites refused to load and demanded that I disable AdBlock first? What's the point if AdBlock can't work WITHOUT tipping off its presence to web sites?
Thanks for your question. This is one of the complaints we receive most often, and we totally get why it's so frustrating. We feel the same way.
Sites can detect you're using an ad blocker very easily. Ad blockers work by preventing ad resources from downloading. All a site needs to do is to try to download a little test resource that's designed to look like an ad. If the download fails, the site knows an ad blocker is being used. That's just the most common test; I believe there are others as well.
We have more information about this here: A site is forcing me to turn off AdBlock before it will let me in
Hope this helps!
AdBlock Community Manager