A common theme emerged during HousingWire's 2011 REO Expo: the need to sustain the value of homeownership by breathing new life into at-risk neighborhoods. Rebuilding Together, a nonprofit that provides free rehabilitation and repair services for low-income families, continues to pursue the goal of helping families maintain their properties in times of financial stress. Rebuilding Together partnered with REO Expo to raise funds for homeowner-assistance initiatives through a silent auction at the event in Fort Worth this week. The auction drew large crowds Tuesday afternoon as the bidding activity reached a frenzied pace.