Load the page with Adblock+ enabled. Right-click on the ABP icon and select "Open blockable items". Find "###Ad1", right-click on it, and select "Disable filter ###Ad1". Now right-click on the ABP icon again and select "Preferences". In the new dialog, click "Add filter". Enter this filter: "~digitalhome.ca###Ad1".

What all of this does is disable the filter that's matching the content on your web site, then re-add the same filter, except telling it to do it everywhere except digitalhome.ca.

Unfortunately, it doesn't appear that Adblock supports element exception rules.