Recently I was made aware of HeidiSQL, and besides being an awesome program, it had an even awesomer way to tackle adblockers. With your adblocker off, you see ads, with your adblocker on, it displays a message explaining how free things are powered by ads. I loved it, and asked the creator to tell me how, here's my version of his code.
- Find the DOM id of your ad, for me, that was 'aswift_0'
- insert a div before the ad
<div id = "senseReplace" style="width:728px;" top="50%"> </div>
- I also put a div around the ad that I resize to make space for the replacement message.