To put it mildly, the DDO Offer Wall didn't turn out as expected. Turbine certainly earned back any lost ground with fans with their quick response to the community's unhappiness -- they maintained communication while simultaneously dealing with the problem, apologized, and gave players exactly what they wanted in the space of about 48 hours. The Offer Wall was taken out back and shot, and Turbine looked at other avenues for point-earning opportunities.
Their newest attempt arrived yesterday with the introduction of the Referral Program. It's a tried-and-true method for a lot of MMOs.