Here is a Myspace blog from gretchen talking about it...
From: Crackin Up! with Gretch…
Date: May 23, 2009 1:21 PM
Subject: House Calls Canceled!
Body: Just wanted everyone to know, there's no more House Calls! They couldn't find a sponsor and have decided not to go forward with it during this season of Big Brother.
Sorry to all our fans - I'll miss you!
"Anybody Want Cake?"