We have today installed a pop up warning if adblock is installed in the users browsers.
The free forums are financed by ads, and it's very important that the ads are shown in order for us to be able to pay our server costs.

This is the instructions how to remove adblock in Firefox:
Click "Tools"
click "Add-ons"
find and click on "Adblock plus"
click "Uninstall"
restart Firefox (close the Firefox browser and open it again, don't restart the computer).