Yes, I would recommend that Firefox AdBlocker (one of my favorite add-ons for FF by the way)be disabled for all pages on the Auctiva site. That's how I have my Firefox setup both at home and at work.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .