Re: How aren't Bitcointalk ads blocked by ad blockers like ABP ?
My question is: how do they do that ? How can they bypass adblockers ? 
A lot of sites are bypassing the standard AD blocker (ad block plus), or they're are able to detect them and tend ask you to turn it off in order to continue exploring the website. It's a kind of a 'constant battle'. I do remember reading about an "AD-Block blocker" and a "anti AD-Block killer". Apparently, there are a few services that offer 'solutions' to detect AD-Block, block or mitigate it. However, experienced users are able to use advanced blockers and modify their filtration lists. You can find more information here.