Note that starting with the round being bid on here, we might stop attempting to bypass adblockers.

Currently, the page is structured so that it's impossible for traditional adblockers based on CSS selectors to block the bitcointalk.org ad area in general (without also breaking the page). However:

 1) Adblockers can still block your ad in particular (as opposed to the ad area for all ads) if your ads are not designed in a very specific way, and advertisers almost never design their ads to be adblocker-resistant. In the past 2 years, I'd guess that there have been maybe one or two advertisers who designed their ads so that they couldn't easily be blocked. (If you're not sure whether your ad is adblocker-resistant, then it's not.)
 2) Some adblockers such as uBlock have now extended the traditional adblocker capabilities in a way which can only really be bypassed by constantly making manual changes to the page structure to counteract their filters whenever they update them.
 3) The current adblocker-bypassing capability requires mangling the page's HTML in a way which is maybe unfriendly to search engines and other automated tools.

Therefore, I think that stopping our attempt at bypassing adblockers will have little to no cost to advertisers (whose ads are probably already blocked, or are at least blockable), and continuing it is not worthwhile.